AGNES P., ALBUQUERQUE I., ALEXANDER T., MOUGEOT X., et al., “Search for dark matter annual modulation with DarkSide-50”, Physical Review D, 2024, 110, 102006, DOI: 10.1103/PhysRevD.110.102006.

ANDOCHE A., MOUAWAD L., HERVIEUX P.-A., MOUGEOT X., MACHADO J., SANTOS J. P., “Influence of atomic modeling on electron capture and shaking processes”, Physical Review A, 2024, 109, 032826, DOI: 10.1103/PhysRevA.109.032826.

BARAVAGLIO M., SABOT B., MADDALENA F., BIROWOSUTO M., DANG C., DUJARDIN C., MAHLER B., “Energy deposition in liquid scintillators composed of CsPbBr3 colloidal nanocrystal dispersions”, Nanoscale, 2024, 16, 17176-17186, DOI: 10.1039/d4nr02401i.

BLIDEANU V., BEHAL R., BESNARD-VAUTERIN C., GLAGOLEV V., LEDOUX X., MRAZEK J., RAPP B., SIMECKOVA E., “Experimental assessment and analysis of calculations accuracy for the neutron-induced radio-isotope creation in copper parts of radiotherapy accelerators”, Nuclear Instruments and Methods in Physics Research B, 2024, 557, 165553, DOI: 10.1016/j.nimb.2024.165553.

BLIDEANU V., BESNARD-VAUTERIN C., B. RAPP, “Neutron spectra from photonuclear reactions: Performance testing of Monte-Carlo particle transport simulation codes”, Nuclear Instruments and Methods in Physics Research B, 2024, 549, 165292, DOI: 10.1016/j.nimb.2024.165292.

BLIDEANU V., BESNARD-VAUTERIN C., RAPP B., “Neutron detection in mixed short-pulsed fields with intense photon flashes for LINAC-based active interrogation applications”, Nuclear Instruments and Methods in Physics Research A, 2024, 1064, 169403, DOI: 10.1016/j.nima.2024.169403.

BUFFLER A., HUTTON T., JARVIE E., BABUT R., “A compact scintillator-based detector for high energy neutron spectrometry”, Radiation Physics and Chemistry, 2024, 220, July, DOI: 10.1016/j.radphyschem.2024.111698.

BUOHADIDA M., HMEDE R., BROVCHENKO M., MONANGE W., VINCHON T., DUISCASSE Q. and TROMPIER F., “Exploration of genetic algorithms to build a balanced neutron spectra dataset useful to train unfolding techniques based on artificial neural networks”, European Physical Journal Web of Conferences, 2024, 302, 17011, DOI: 10.1051/epjconf/202430217011.

CARLINI A., BOBIN C., PAINDAVOINE M., THEVENIN M., “A methodology for alpha particles identification in liquid scintillation using a cost-efficient Artificial Neural Network”, Nuclear Instruments and Methods in Physics Research A, 2024, 1064, 169369, DOI: 10.1016/j.nima.2024.169369.

CHASAPOGLOU S., MICHALOPOULOU V., KOKKORIS M., VLASTOU R., AXIOTIS M., LAGOYANNIS A., LEDERERWOODS C., BABUT R., MAGALOTTI N., “Cross-section measurements of neutron-induced reactions on Ge isotopes in the neutron energy range 14.0-18.9 MeV”, Physical Review C, 2024, 110, 4, pp.044612.

CRAVEIRO G., LEBLOND S., MOUGEOT X., VIVIER M., “Unfolding experimental distortions in beta-spectrometry”, Frontiers in Physics, 2024, 12, 1435615, DOI: 10.3389/fphy.2024.1435615.

DarkSide-50 Collaboration, MOUGEOT X., “Long-term temporal stability of the DarkSide-50 dark matter detector”, Journal of Instrumentation, 2024, 19, P05057, DOI: 10.1088/1748-0221/19/05/P05057.

ELVIRA V. H., LÉPY M.-C., MÉNESGUEN Y., MELHEM S., “Radionuclide-free efficiency calibration of an HPGe detector using monochromatic photon beams calibrated with a cryogenic radiometer”, Applied Radiation and Isotopes, 2024, 203, 111087, DOI: 10.1016/j.apradiso.2023.111087.

GEOGRIEV S., DIMITROVA I., PRESSYANOV D., SABOT B., MICHIELSEN N., BONDIGUEL S., MITEV K., “Studies on the retrospective thoron measurements by CDs/DVDs: A posteriori calibration and influence of environmental factors”, Radiation Measurements, 2024, 175, 107147, DOI: 10.1016/j.radmeas.2024.107147.

HENNING G., CHEBBOUBI A., DE SAINT-JEAN C., ESTIENNE M., FALLOT M., GIOT L., KERVENO M., LITAIZE O., MOUGEOT X., PORTA A., SEROT O., VALLET V., “Need of precise nuclear structure data for reactor studies”, European Physical Journal - Nuclear Sciences and Technologies, 2024, 10, 6, DOI: 10.1051/epjn/2024007.

HIGGINSON D. P., LELIÈVRE R., VASSURA L., GUGIU M. M., BORGHESI M., BERNSTEIN L. A., BLEUEL D. L., GOLDBLUM B. L., GREEN A., HANNACHI F., KAR S., KISYOV S., QUENTIN L., SCHROER M., TARISIEN M., WILLI O., ANTICI P., NEGOITA F., ALLAOUA A. and FUCHS J., “Global characterization of a laser-generated neutron source”, Journal of Plasma Physics, 2024, 90, 8, 905900308, DOI: 10.1017/S0022377824000618.

JURCZAK J., RAPP B., BORDY J.-M., JOSSET S., DUFRENEIX S., “Defining field output factors in small fields based on dose area product measurements: a feasibility study”, Medical Physics, 2024, 51, 3677-3686, DOI: 10.1002/mp.16950.

KANJ A., LYNDE C., CARREL F., BEN MOSBAH M., VENARA J., EL BITAR Z., ROUSSEAU M., BABUT R., “Measurement of the response function of a custom plastic scintillator using monoenergetic neutron and proton sources”, IEEE Transactions on Nuclear Science, 2024, 71, 9, 2133-2139, DOI: 10.1109/TNS.2024.3381252.

KANJ A., LYNDE C., CARREL F., FRANGVILLE C., THIAM C., BEN MOSBAH M., VENARA J., “Performance of deconvolution codes (MAXED, GRAVEL, MLEM) for neutron spectrometry of radioactive source using plastic scintillator simulated data”, Radiation Measurements, 2024, 176, 107206, DOI: 10.1016/j.radmeas.2024.107206.

LEBLOND S., “DDEP re-evaluation of the radioactive decay scheme of 137Cs”, Applied Radiation and Isotopes, 2024, 206, 111191, DOI: 10.1016/j.apradiso.2024.111191.

LELIÈVRE R., CATRIX E., VALLIÈRES S., FOURMAUX S., ALLAOUA A., ANTHONIPILLAI V., ANTICI P., DUISCASSE Q. and FUCHS J., “High repetition-rate 0.5 Hz broadband neutron source driven by the Advanced Laser Light Source”, Physics of Plasmas, 2024, 31, 9, 093106, DOI: 10.1063/5.0218582.

LELIÈVRE R., YAO W., WALTENSPIEL T., COHEN I., ANTHONIPILLAI V., BECK A., COHEN E., MICHAELI D., POMERANTZ I., GAUTIER D. C., TROMPIER F., DUISCASSE Q., KOSEOGLU P., SODERSTROM P.-A., MATHIEU F., ALLAOUA A. and FUCHS J., “A Comprehensive Characterization of the Neutron Fields Produced by the Apollon Petawatt Laser”, European Physical Journal Plus, 2024, 139, 11, 1035, DOI: 10.1140/epjp/s13360-024-05679-x.

LÉPY M.-C., THIAM C., ANAGNOSTAKIS M., COSAR C., DE BLAS A., DIKMEN H., DUCH M., GALEA R., GANEA M., HURTADO S., KARFOPOULOS K., LUCA A., LUTTER G., MITSIOS I., PERSSON H., POTIRIADIS C., RÖTTGER S., SALPADIMOS N., SAVVA M., SIMA O., THANH T., TOWNSON R., VARGAS A., VASILOPOULOU T., VERHEYEN L., VIDMAR T., “A benchmark for Monte Carlo simulations in Gamma-ray spectrometry Part II: True coincidence summing correction factors”, Applied Radiation and Isotopes, 2024, 204, 111109, DOI: 10.1016/j.apradiso.2023.111109.

MARIE-LUCE R., MAI P., LEROUGE F., CHEREF Y., PIERRE S., SABOT B., CHAPUT F., DUJARDIN C., “Real-time detection and discrimination of radioactive gas mixtures using nanoporous inorganic scintillators”, Nature Photonics, 2024, 18, 1037-1043, DOI: 10.1038/s41566-024-01507-x.

MÜLLER M., RODRIGUES M., BEYER J., LOIDL M., KEMPF S., “Magnetic microcalorimeters for primary activity standardization within the EMPIR project PrimA-LTD”, Journal of Low Temperature Physics, 2024, 214, 263-271, DOI: 10.1007/s10909-024-03048-7.

ORFANO M., PEREGO J., BEZUIDENHOUT C. X., VILLA I., LORENZI R., SABOT B., PIERRE S., BRACCO S., PIVA S., COMOTTI A., MONGUZZI A., “Reabsorption-free scintillating hetero-ligand MOF crystals activated by ultrafast energy transfer”, Advanced Functional Materials, 2024, 34, 2404480, DOI: 10.1002/adfm.202404480.

PAULSEN M., RANITZSCH P. C.-O., LOIDL M., RODRIGUES M., KOSSERT K., MOUGEOT X., SINGH A., LEBLOND S., BEYER J., BOCKHORN L., ENSS C., WEGNER M., KEMPF S., NÄHLE O., “High precision measurement of the 99Tc β spectrum”, Physical Review C, 2024, 110, 055503, DOI: 10.1103/PhysRevC.110.055503.

PHAN D. T., BOBIN J., THIAM C., BOBIN C., “A hybrid Machine Learning unmixing method for automatic analysis of γ-spectra with spectral variability”, Nuclear Instruments and Methods in Physics Research A, 2024, 1060, 169028, DOI: 10.1016/j.nima.2023.169028.

PLAGNARD J., LEFÈVRE J., “X-ray spectrometry for calculating conversion coefficients from air kerma to operational quantities in radiation protection”, Journal of Radiological Protection, 2024, 44, 031506, DOI: 10.1088/1361-6498/ad6777.

ROBERTS N., HORWOOD N., VYKYDAL Z., PARK H., KIM J., PEREIRA W., DA FONSECA E., THIAM C., HUI Z., DEWEY M., MUMM H., HARANO H., MATSUMOTO T., MASUDA A., MANABE S., ARCHAMBAULT J., MOISEEV N., DIDYK A., “International comparison of measurements of neutron source emission rate (2016-2021) - CCRI(III)-K9.Cf.2016”, Metrologia, 2024, 61, 06001, DOI: 10.1088/0026-1394/61/1A/06001.

SABOT B., DUTSOV C., CASSETTE P., MITEV K., HAMEL M., BERTRAND G. H., KHEIRREDDINE L., DUJARDIN C., “A compact detector system for simultaneous measurements of the light yield non-linearity and timing properties of scintillators”, Scientific Reports, 2024, 14, 6960, DOI: 10.1038/s41598-024-57186-9.

SCHWEIZER P., MÉNESGUEN Y., LÉPY M.-C., BRACKX E., DUCHATEAU M., JONNARD P., “High-accuracy experimental determination of photon mass attenuation coefficients of transition metals and lithium fluoride in the ultra-soft energy range”, Physical Chemistry Chemical Physics, 2024, 26, 1258712593, DOI: 10.1039/d4cp00500g.

TODOROV V., GEORGIEV S., HAMEL M., DUTSOV C., SABOT B., DIMITROVA I., MITEV K., “Evaluation of radon absorption and detection properties of a plastic scintillator developed for PSD measurements”, Measurement, 2024, 231, 114554, DOI: 10.1016/j.measurement.2024.114554.

ZAHIR MOSTAFA L., RODRIGUES M., LOIDL M., KAUR A., “Energy non-linearity study of a high-resolution metallic magnetic calorimeter”, Radiation Physics and Chemistry, 2024, 220, 111730, DOI: 10.1016/j.radphyschem.2024.111730.

QUEVAUVILLERS D., "Neutron characterization of scintillators for neutron metrology from 100 keV to 22 MeV", ARIEL - H2020 Final Workshop, Paris, France, 19 January 2024.

MÉNESGUEN Y., "Reference-free Combined X-ray Reflectivity and Grazing Incidence X-ray Fluorescence Analysis: Metrological and Technical Aspects", Conférence SPIE “Optical Systems Design “, Strasbourg, France, 7-11 April 2024.

PETIT M., "Radioprotection and medical applications: EURADOS benchmark for testing nuclear models (20-200 MeV on light nucleus)", JEFF meeting, NEA-Boulogne-Billancourt (France), 24 April 2024.

BLIDEANU V., BESNARD-VAUTERIN C., RAPP B., "Photoneutron production at electron LINACs: testing performance of Monte-Carlo simulations and impact on relevant applications", 16th Workshop on Shielding Aspects of Accelerators, Targets and Irradiation Facilities  (SATIF 2024), Rome, Italy, 28-31 May 2024.

BOBIN C., "Premiers résultats de la caractérisation du compteur Hidex 300 SL au LNHB", CETAMA GT18, 10 June 2024.

BOBIN C., "Traçabilité métrologique en médecine nucléaire, Isotopes thérapeutiques pour les cancers de la prostate", Journées scientifiques de la SFPM, Dijon, France, 12-14 June 2024.

DJAROUM M., FITTON I., LEFÈVRE J., PLANGNARD J., VAN NGOC TY C., BORDY J.-M., "Traçabilité de la dose glandulaire moyenne : méthodologie de mesure et modélisations des spectres d'un mammographe numérique", Journées Scientifiques de la SFPM, Dijon, France, 12-14 June 2024.

MOUGEOT X., "Single beta spectral shapes and theories", Conférence Neutrino 2024, Milan, Italy, 16-22 June 2024.

LEBLOND S., "International Initiative on X-ray Fundamental Parameters Status and next steps", Conférence EXRS 2024, Athènes, Greece, 24-28 June 2024.

MÉNESGUEN Y., "Unveiling elemental depth-profile in thick samples by Angular-Resolved X-Ray Fluorescence", Conférence EXRS 2024, Athènes, Greece, 24-28 June 2024.

UTEPOV A., "New experimental determination of L shell fluorescence yields and Coster Kronig transition factors of platinum", Conférence EXRS 2024, Athènes, Greece, 24-28 June 2024.

QUEVAUVILLERS D., “Caractérisation de scintillateurs pour la métrologie des neutrons”, Journées des LARD, Cadarache, France, 2-3 July 2024.

HERTAY S., “Passage en configuration finale du détecteur de neutrons μ-TPC avant sa caractérisation primaire”, Journées des LARD, Cadarache, France, 2-3 July 2024.

MOBIO E., “Conception d'un champ de neutrons épithermiques et caractérisation par une méthode de spectrométrie”, Journées des LARD, Cadarache, France, 2-3 July2024.

ANTICO P., D’AMORA G., DANIEL C., MONGUZZI A., COMOTTI A., PEREGO J., ORFANO M., DUJARDIN C., SABOT B., “Development of New Composite Scintillators Based on Poly(divinylbenzene) Aerogels with PPO and POPOP Dopants”, 17th International Conference on Scintillating Materials and their Applications (SCINT 2024), Milan, Italy, 8-12 July 2024.

PEREGO J., ORFANO M., BEZUIDENHOUT C. X., VILLA I., COVA F., VEDDA A., DUJARDIN C., SABOT B., SOZZANI P., BRACCO S., COMOTTI A., MONGUZZI A., “Re-absorption free scintillating MOFs crystals activated by ultrafast energy transfer”, 17th International Conference on Scintillating Materials and their Applications (SCINT 2024), Milan, Italy, 8-12 July 2024.

SABOT B., "Needs and Trends in scintillation for radionuclide metrology", ”, 17th International Conference on Scintillating Materials and their Applications (SCINT 2024), Milan, Italy, 8-12 July 2024.

BOBIN C., THIAM C., BOBIN C., “A hybrid Machine Learning unmixing method for gamma-spectrometry”, Proceedings of 32nd European Signal Processing Conference (EUSIPCO 2024), Lyon, France, 26-30 Aug. 2024, 1871-1875, DOI: 10.23919/EUSIPCO63174.2024.10715033.

CHACARTEGUI ROJO I. D. L., “Chang'E 6 y DORN: Abriendo nuevas fronteras en la exploración lunar”, Encuentros sobre las fronteras de la ciencia (EFC 2024), Salamanca, Spain, 19-20 Sept. 2024.

BOUHADIDA M., HMEDE R., BROVCHENKO M., MONANGE W., VINCHON T., et al, "Exploration of genetic algorithms to build a balanced neutron spectra dataset useful to train unfolding techniques based on artificial neural networks", SNA + MC 2024 - Joint International Conference on Supercomputing in Nuclear Applications + Monte Carlo, SFEN, Paris, France, October 2024.

QUEVAUVILLERS D., "Characterization of Stilbene scintillator for neutron metrology and spectrometry from 100 keV to 22 MeV", 2024 IEEE NSS MIC RTSD, Tampa, Floride, USA, October 2024.

VINCHON T., FUCHS J., “Optimisation de nouveaux détecteurs neutrons et des techniques d'analyse associées avec des méthodes d'IA”, Colloque MITI, session « Faire équipe avec des partenaires institutionnels », Paris, France 1^st October 2024.

MOUGEOT X., "The BetaShape code - status and developments", Nuclear Data Week 2024, BNL, EU, 1-4 octobre 2024.

DUISCASSE Q., "Présentation des installations de production de neutrons du LMDN", Journées Scientifiques du Neutron (JSN), Cadarache, France, 2-4 October 2024.

LELEVRE R., "Characterization of neutron emissions produced at the Apollon laser facility", Journées Scientifiques du Neutron, Saint-Paul-Lez-Durance, France, 3 October 2024.

BESNARD-VAUTERIN C., RAPP B., BLIDEANU V., "Progrès dans l'interrogation photonique active grâce à la spectrométrie des photo-neutrons : Utilisation des signatures de l'azote pour la détection des matériaux illicites", Journées Scientifiques du Neutron, Saint-Paul-Lez-Durance, France, 3 October 2024.

BESNARD-VAUTERIN C., RAPP B., BLIDEANU V., "Development of an Electron LINAC Based Photoneutron Reference Field for Metrology-Grade Irradiations", IAEA Technical Meeting on Neutrons for Nuclear Sciences and Applications, Gif-sur-Yvette, France, 14-17 October 2024.

BESNARD-VAUTERIN C., RAPP B., BLIDEANU V., “Advancements in active photon interrogation through photo-neutron spectrometry: unveiling nitrogen signatures for illicit materials detection”, Proceedings of 2024 IEEE Nuclear Science Symposium and Medical Imaging Conference (IEEE NSS-MIC 2024), Tampa, USA, 26 Oct. - 2 Nov. 2024, DOI: 10.1109/NSS/MIC/RTSD57108.2024.10656955.

DUISCASSE Q., "Installation CEZANE, bilan et perspectives", Journée des Utilisateurs des Installations (JUI), Espace COM BAT 1220, 3 December 2024.

LEBLOND S., MOUGEOT X., KELLETT M. A., “Nuclear data evaluation for radionuclide metrology", Webinaire CCRI, BIPM, Sèvres, France, 5 December 2024.

Ultra-intense lasers represent a new way to produce neutron fields, more compact than nuclear reactors or accelerators and with fewer radiological constraints than these conventional sources. The electric field induced by an ultra-intense laser pulse within a micrometer-sized target can reach several TV/m, allowing for the acceleration of protons to several tens of MeV. These protons can then be intercepted by a second target, called a converter, in which they induce nuclear reactions and thus produce neutrons. This technique, known as the pitcher-catcher technique, is capable of generating very intense fluxes (> 10¹⁷ n/cm²/s) at energies up to several tens of MeV, making it possible to envision applications such as neutron imaging or the laboratory reproduction of the rapid nucleosynthesis process responsible for the creation of the heaviest elements.

To demonstrate the feasibility of these applications and ensure the radiological protection of these laser facilities, these neutron fields must be optimally characterized. Detectors with ultra-fast electronics or passive detectors appear to be most compatible to the characteristics of laser-driven neutron sources (very brief and intense emissions, noisy environment, etc.).

This thesis work focuses on optimizing the development of a neutron activation spectrometer (SPAC), particularly suitable for measuring intense neutron fields with a strong gamma component. In addition to simulations of the expected source terms and detector responses using Geant4 & MCNP Monte Carlo codes, bubble dosimeters, Time-of-Flight detectors and activation samples were used on various laser facilities such as ALLS (Canada) and Apollon (France), to optimize and characterize the produced neutron emissions.

ultra-Intense lasers, neutrons, laser-driven neutron sources, detection, nuclear physics

Full document (EN): HAL-04957025

The X and gamma rays emitted by radionuclides can be used to calibrate the energy scale of energy-dispersive detectors. This is particularly the case for cryogenic detectors, which offer excellent resolution but have non-linearities that need to be corrected. In order to calibrate these detectors accurately below 200 keV, it is necessary to have X-rays and gamma rays with an uncertainty of the order of 0.1 eV. However, recommended gamma-ray photon energies meeting this criterion are rare or based on a single experimental measurement.

The main objective of this thesis is to measure gamma photons below 200 keV with excellent resolution in order to improve the uncertainties on their energies to around 0.1 eV.

To meet this objective, a new cryogenic detector has been designed. It is a Metallic Magnetic Calorimeter (MMC) with eight 50 µm-thick gold absorbers covering a total surface area of 8.4 mm².

An assembly was built to house: four MMC chips, two SQUID chips for reading-out the MMCs, and the printed circuits to connect them to the cables of the dilution refrigerator. The set-up also includes a cryogenic radioactive source sampler, specially designed to operate at very low temperatures and to measure up to four sources sequentially.

The sources measured are mixtures of several radionuclides: three standard radionuclides used to correct the non-linearity of the MMC (¹⁶⁹Yb, ⁵⁷Co and ¹⁵³Gd) and seven radionuclides used to measure their X and gamma energies with very low uncertainty (¹⁰⁹Cd, ¹³³Ba, ¹⁵⁵Eu, ²¹⁰Pb, ²³⁹Np, ²⁴¹Am and ²⁴³Am). Mixtures of radionuclides in the sources were chosen by Monte Carlo simulations to minimise spectral interference. Ytterbium-169 was produced by irradiating a thulium foil with deuterons at the Arronax cyclotron.Two independent measurement sessions on two set of four sources were carried out at around 16 mK during two weeks, with different temperature control conditions.

The energy resolution of the detector is 15 eV to 36 eV for gamma-rays between 0 keV and 200 keV. The non-linearity of each absorber was corrected using the lines of the standard radionuclides and a second-degree polynomial.

The X-ray and gamma-ray energies measured were analysed and combined using various methods. Regardless of the measurement session and analysis method used, the energies obtained are consistent with each other, with only the uncertainties differing. In the end, the energies of 15 gamma-ray lines were measured and for 14 of them, the uncertainty obtained, around 0.2 eV, is lower than the recommended values. Eight Kα X-ray photon energies were also measured; for these well-known lines, very good agreement was observed with the recommended values, thus validating the methodology used in the work presented.

ionizing radiation metrology, photon spectrometry, cryogenic detectors

Full document (FR) : TEL-04833258

The thesis aims to develop radioactive surface sources to improve the traceability of surface contamination measurements carried out during dismantling operations. In particular, the ultimate aim is to provide radioactive sources that can be traceable and used in the field to characterize the performance of surface contamination monitors. The sources that meet the requirements of international standards have very different characteristics from the surfaces to be monitored during decontamination and dismantling (D&D) activities. They consist of a rigid aluminum substrate on which surface the activity is deposited and then covered with a protective layer.

The study involved developing methods for modifying two types of substrates, polymeric and aluminum, to attach radioactive elements (trivalent lanthanide and actinide). For aluminum substrates, coating with manganese or chromium oxides was tested, along with silanol functionalization and phosphonic acid grafting. The surface modification of polymeric substrates was based on oxidation, followed by sulfonic acid grafting. Whatever the substrate, the study was divided into several stages: preparing the surface, functionalizing/modifying it, attaching the radioactivity and quantifying the uniformity of the radioactive distribution.

Each stage was optimized and characterized using SEM, ATR-FTIR, liquid scintillation and autoradiography. The aluminum substrate, while flexible, allows to be compared with current standard sources. Additionally, the polymeric substrates can be adapted to mimic the real constraints of the D&D sites (sand load, roughness, molding of complex shapes). Finally, an assessment of the compliance of the sources with existing standards was carried out, even though these standards do not meet the complex needs of measurements on D&D sites. The polymeric substrates coated with manganese oxide could uptake close to 100% of ¹⁵²Eu and ²⁴¹Am when immersed in acidic radioactive solutions for a few hours. For these sources, the uniformity of the radionuclide distribution reached 90%.

radioactive source, decomissioning, surface modification, traceability, ¹⁵²Eu, ²⁴¹Am

Full document (EN): HAL-04521519 

The characterization of thin films and multilayered materials is crucial in advanced material science and its applications. In this thesis we introduce a reference-free method for the characterization of thin lm materials by combining X-ray Reflectivity (XRR) and Grazing Incidence X-ray Fluorescence (GIXRF) techniques. XRR is a sensitive technique to the electronic density, allowing for determination of the density, thickness and roughness of thin layers. On the other hand, GIXRF is sensitive to the elemental density, providing information on the elemental depth distribution. The combination of these techniques removes ambiguous results for the characterization of nanometer layers, as well as nanometer depth profiles, resulting in a more accurate sample characterization. The reference-free method is based on the physics of ionization and absorption and requires knowledge of the atomic fundamental parameters rather than the use of reference materials or calibration standards. However, the combined analysis of GIXRF and XRR is a challenging task due to the high number of fitting parameters and to the different dynamic ranges of these two techniques; since XRR exhibits a normalized signal from 0 to 1, whereas a GIXRF spectrum is a histogram presenting peaks of which areas ranging from hundreds to millions of counts.

To address these challenges, we propose in this thesis a recursive method for estimating uncertainties in combined GIXRF-XRR analysis based on the Bootstrap statistical method. This method involves generating random weights to be multiplied by the cost function data points. The application of these weights results in new set of optimized thin film values that differs from the original ones. By repeating the process, a set of optimized structures are calculated, of which statistics can be performed to deduce the uncertainties on the optimized parameters of the sample structure. An additional problem in the reference-free combined GIXRF-XRR analysis is the consideration of uncertainties in the fundamental parameters and the solid angle of detection. We therefore introduce a Monte Carlo-based approach to calculate the uncertainty on the solid angle of detection and the fundamental parameters which are included in the combined analysis. The measurement of several selected samples using GIXRF and XRR were carried out in the CASTOR goniometer on the MÉTROLOGIE beamline of the SOLEIL synchrotron facility. XRR data were initially analyzed to estimate structural composition with IMD software, followed by the fitting XRF spectra using COLEGRAM to derive the intensity of fluorescence X-ray emission lines. The combined GIXRF-XRR analysis was afterwards performed using ELIXIR, in-house software, to derive the sample structure and the associated uncertainties were calculated by a Mathematica program. This methodology was applied to amorphous and crystalline chalcogenides GexSbyTez with different (x, y, z) compositions and on tantalum-based thin films, doped with different elements. The derived uncertainties on the sample structure, fundamental parameters, and solid angle were analyzed. Furthermore, some fundamental parameters, namely mass attenuation coefficients, fluorescence yields and photoelectric absorption coefficients for iron and yttrium were measured and their uncertainties were estimated using different methods. Finally, to improve the resolution of the fluorescence detection, we developed a prototype of a wavelength dispersive spectrometer (WDS) based on Bragg's diffraction, which includes a crystal and a high-resolution CCD sensor, achieving a resolution of 2eV at 8048eV.

X-ray spectrometry, metrology, X-ray fluorescence, material sciences, thin layers

Full document (EN) : https://theses.hal.science/tel-04412121

Accurate fractional electron capture probabilities and beta spectra measurements are vital in radionuclide metrology. When determining the SI unit of activity, Becquerel, using primary activity measurements e.g . by Liquid Scintillation Counting (LSC), decay data on beta decay and electron capture are essential. These data are also crucial for validating theoretical calculations and for numerous applications, including nuclear medicine, nuclear energy and waste management or neutrino physics research. Additionally, accurate data on the photon emission intensities from radionuclides undergoing electron capture (EC) is vital for calibrating X-ray and gamma-ray detectors. In the literature, most decay data concerning beta decay and electron capture is derived from old measurements or theoretical calculations having large or underestimated uncertainties. Recent measurements using cryogenic detectors revealed these discrepancies. Metallic Magnetic Calorimeters (MMCs) are cryogenic detectors that have demonstrated impressive performance in beta spectra, total decay energy, and X-ray measurements. Their key features include high energy resolution, a low energy threshold, excellent energy linearity, and nearly % detection eciency at low energies. This thesis employs MMCs in the Decay Energy Spectroscopy (DES) mode, also known as measurement mode, to measure the decay data for specic radionuclides undergoing beta decay (like 14C) and electron capture (such as 125I, 54Mn, 59Ni, and 51Cr). Emphasis is placed on the source preparation step to address spectral distortions that can arise from certain types of radionuclide samples. The obtained results showed improvement in uncertainties and are in large part in agreement with the literature values and those from the BetaShape calculation code.

cryogenic detector, radionuclide metrology, nuclear decay data, decay energy spectroscopy, fractional electron capture probability ratio, Beta spectrum

Full document (EN) : https://theses.hal.science/tel-04417104

P. Agnes, I. Albuquerque, T. Alexander, X. Mougeot, et al., “Search for dark matter particle interactions with electron final states with DarkSide-50”, Physical Review Letters,130, 101002 (7 p.) (2023). DOI : 10.1103/PhysRevLett.130.101002.

P. Agnes, I. Albuquerque, T. Alexander, X. Mougeot, et al., “Search for dark matter-nucleon interactions via Migdal effect with DarkSide-50”, Physical Review Letters, 130, 101001 (7 p.) (2023). DOI : 10.1103/PhysRevLett.130.101001.

P. Agnes, I. Albuquerque, T. Alexander, X. Mougeot, et al., “Search for low mass dark matter in DarkSide-50: the bayesian network approach”, The European Physical Journal, C 83, 322 (21 p.) (2023). DOI : 10.1140/epjc/s10052-023-11410-4.

G. Amoyal, V. Schoepff, F. Carrel, M. Morenas, D. Dusciac, “Design and characterization of a near-field gamma imager for in situ measurements of fuel rod deformations”, Nuclear Instruments and Methods in Physics Research A, 1050, 168164 (9 p.) (2023). DOI : 10.1016/j.nima.2023.168164.

C. Besnard-Vauterin, V. Blideanu, B. Rapp, “Development of a new method for the detection of illicit materials based on the Active Photon Interrogation method and photo-neutron spectrometry”. Proceedings of 8th International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications (ANIMMA 2023; Lucca, Italy; 12-16 June 2023). In EPJ Web of Conferences, 288, 06004 (8 p.) DOI : 10.1051/epjconf/202328806004.

C. Bobin, C. Thiam, M.-D. M'Hayham, X. Mougeot, “Activity standardization of 60Co and 106Ru/106Rh by means of the TDCR method and the importance of beta spectrum”, Applied Radiation and Isotopes, 201, 110993 (6 p.) (2023). DOI : 10.1016/j.apradiso.2023.110993.

J. Bobin, R. Carloni Gertosio, C. Bobin, C. Thiam, “An autoencoder-based model for learning regularizations in unmixing problems”, Digital Signal Processing, 139, 104058 (13 p.) (2023). DOI : 10.1016/j.dsp.2023.104058.

M. Bouhadida, A. Mazzi, M. Brovchenko, T. Vinchon , M. Alaya , W. Monange , F. Trompier, "Neutron spectrum unfolding using two architectures of convolutional neural networks", Nuclear Engineering and Technology, 55 (2023) 2276e2282. DOI : 10.1016/j.net.2023.03.025.

P. Cassette, V. Todorov, B. Sabot, S. Georgiev, K. Mitev, “Uncertainties in TDCR measurement revisited: Contribution of optical effects”, Applied Radiation and Isotopes, 201, 110992 (2023). DOI : 10.1016/j.apradiso.2023.110992.

R. Coulon, M. A. Leobino da Silva, E. Bendall, D. E. Bergeron, C. Bobin, I. Bonková, A. H. Bowan, B. Ryszard, M. Capogni, M. Capone, P. Carconi, P. Cassette, T. C. Jeffrey, E. L. Clark, S. Collins, S. Courte, M. Czudek, C. J. da Silva, J. de Almeida Rangel, P. De Felice, F. Fan, A. Fazio, R. P. Fitzgerald, C. Fréchou, R. Galea, V. Gressier, A. Iwahara, S. M. Judge, C. M. Keevers, J. Keightley, K. Kossert, M. Krivošík, D. Kulkarni, L. Laureano-Perez, E. Lech, A. Leiras, J. Liang, P. A. Lima da Cruz, R. Lins da Silva, A. Listkowska, H. Liu, M. Liu, J. Lubbe, C. Michotte, K. Moore, O. Nähle, M. Nonis, A. Pearce, L. Pibida, A. L. Quadros, N. Ramirez, A. Ravindra, B. Sabot, P. Saganowski, V. Sathian, M. L. Smith, R. Sharma, M. P. Takács, M. W. van Rooy, R. Shearman, M. J. van Staden, W. van Wyngaardt, Z. Yang, M. Zarifi, M. Zhang, T. Ziemek, “The international reference system for beta-particle emitting radionuclides: Validation through the pilot study CCRI(II)-P1.Co-60”, Applied Radiation and Isotopes, 200, 110945 (12 p.) (2023). DOI : 10.1016/j.apradiso.2023.110945.

I. Dimitrova, S. Georgiev, K. Mitev, V. Todorov, C. Dutsov, B. Sabot, “Study of the performance and time response of the RadonEye Plus2 continuous radon monitor”, Measurement, 207, 112409 (9 p.) (2023). DOI : 10.1016/j.measurement.2022.112409.

J. Hadid, M. Rodrigues, A. Harouri, C. Dupuis, D. Bouville, A. Martin, M. Loidl, L. Ferlazzo, “Detachable 3-layers Au absorber microfabrication for low-temperature detectors”, Micro and Nano Engineering, 20, 100220 (8 p.) (2023). DOI : 10.1016/j.mne.2023.100220.

V. Hernandez Elvira, M.-C. Lépy, Y. Ménesguen, “Primary calibration of photodiodes with monochromatic X-ray beams using an electrical-substitution radiometer”, X-Ray Spectrometry, 52, 279-289 (2023). DOI : 10.1002/xrs.3318.

P. Jonnard, K. Le Guen, R. Delaunay, Y. Ménesguen, M.-C. Lépy, E. Briand, D. Schmaus, I. Vickridge, “Combined x-ray reflectivity and grazing incidence x-ray fluorescence study of Ta/Cr/Pt thin film stacks”, X-Ray Spectrometry, 52, 437-446 (2023). DOI : 10.1002/xrs.3382.

J. Jurczak, B. Rapp, J.-M. Bordy, S. Josset, S. Dufreneix, “Defining field output factors in small fields based on dose area 1 product measurements: a feasibility study”, Medical Physics, Available online (2023). DOI : 10.1002/mp.16950.

D. K. Keblbeck, R. Bhandari, N. D. Gamage, M. Horana Gamage, K. G. Leach, X. Mougeot, M. Redshaw, “Updated evaluation of potential ultralow Q-value β-decay candidates”, Physical Review C, 107, 015504 (2023). DOI : 10.1103/PhysRevC.107.015504.

K. Kossert, C. Bobin, V. Chisté, C. Fréchou, O. Nähle, V. Lourenço, B. Sabot, C. Thiam, “A bilateral comparison between LNHB and PTB to determine the activity concentration of the same 125I solution”, Applied Radiation and Isotopes, 200, 110947 (7 p.) (2023). DOI : 10.1016/j.apradiso.2023.110947.

M.-C. Lépy, J. Riffaud, C. Domergue, H. Philibert, C. Destouches, H. Carcreff, “Fluorescence correction for activity measurement of 93mNb in niobium dosimeters: calculation and experimental validation”. Proceedings of 17th International Symposium on Reactor Dosimetry (ISRD 2023), Lausanne, Switzerland; 22-26 May 2023). In EPJ Web of Conferences, 278, 01001 (9 p.). DOI : 10.1051/epjconf/202327801001.

A. Letourneau, V. Savu, D. Lhuillier, T. Lasserre, T. Materna, G. Mention, X. Mougeot, A. Onillon, L. Perisse, M. Vivier, “Origin of the Reactor Antineutrino Anomalies in Light of a New Summation Model with Parametrized β− Transitions”, Physical Review Letters, 130, 021801 (2023), DOI : 10.1103/PhysRevLett.130.021801. 

S. Mauree, V. Villemot, M. Hamel, B. Sabot, S. Pierre, C. Dujardin, F. Belloni, A. Comotti, S. Bracco, J. Perego, G. H. V. Bertrand, “Detection of radioactive gas with scintillating MOFs”, Advanced Functional Materials, 33, 2302877 (13 p.) (2023). DOI : 10.1002/adfm.202302877.

S. Melhem, Y. Ménesguen, E. Nolot, M.-C. Lépy, “A step toward calculating the uncertainties in combined GIXRF-XRR”, X-Ray Spectrometry, 52, 412-422 (2023). DOI : 10.1002/xrs.3377.

K. Mitev, B. Sabot, S. Pierre, M.-C. Lépy, P. Cassette, “Towards a radon-in-water primary standard at LNHB”, Applied Radiation and Isotopes, 201, 111013 (8 p.) (2023). DOI : 10.1016/j.apradiso.2023.111013.

X. Mougeot, “Atomic exchange correction in forbidden unique beta transitions”, Applied Radiation and Isotopes, 201, 111018 (2023). DOI : 10.1016/j.apradiso.2023.111018.

M. Orfano, J. Perego, F. Cova, C. X. Bezuidenhout, S. Piva, C. Dujardin, B. Sabot, S. Pierre, P. Mai, C. Daniel, S. Bracco, A. Vedda, A. Comotti, A. Monguzzi, “Efficient radioactive gas detection by porous metal-organic framework scintillating nanocrystals”, Nature Photonics, 17, 672-678 (2023). DOI : 10.1038/s41566-023-01211-2.

L. Périssé, A. Onillon, X. Mougeot, M. Vivier, T. Lasserre, A. Letourneau, D. Lhuillier, G. Mention, “Comprehensive revision of the summation method for the prediction of reactor¯νe fluxes and spectra”, Physical Review C, 108, 055501 (30 p.) (2023). DOI : 10.1103/PhysRevC.108.055501.

M. Petit, A. Di Chicco, A. Sardet, R. Babut, R. Jacqmin and B. Stout, “Extended time-of-flight measurements down to 100 keV at the AMANDE facility with a stilbene scintillator”, Radiation Protection Dosimetry, 2023, 199(15–16), 1894–1897. DOI : 10.1093/rpd/ncac256.

F. G. A. Quarati, G. Bollen, P. Dorenbos, M. Eibach, K. Gulyuz, A. Hamaker, C. Izzo, D. K. Keblbeck, X. Mougeot, D. Puentes, M. Redshaw, R. Ringle, R. Sandler, I. Yandow, “Measurements and computational analysis on the natural decay of 176Lu”, Physical Review C, 107, 024313 (19 p.) (2023). DOI : 10.1103/PhysRevC.107.024313.

D. Quevauvillers, L. Ottaviani, M. Petit, C. Reynard-Carette, “Characterization and use of Stilbene scintillator for neutron metrology and spectrometry from 100 keV to 22 MeV“, ANIMMA 2023, EPJ Web of Conferences 288, 10006 (2023). DOI : 10.1051/epjconf/202328810006.

N. J. Roberts, N. A. Horwood, Z. Vykydal, H. Park, J. Kim, W. W .Pereira, E. S. da Fonseca, C. Thiam, Zhang Hui, M. S. Dewey, H. P. Mumm, H. Harano, T. Matsumoto, A. Masuda, S. Manabe, J. P. Archambault, N. N. Moiseev and A. V. Didyk, “International comparison of measurements of neutron source emission rate (2016-2021) - CCRI(III)-K9.Cf.2016”, Metrologia, Vol. 61, N.1A. DOI : 10.1088/0026-1394/61/1A/06001.

M. Rodrigues, M. Loidl and S. Pierre. “Determination of absolute Np L X-ray emission intensities from Am-241 decay using a metallic magnetic calorimeter”. Accepted Manuscript online (2023), Metrologia, DOI : 10.1088/1681-7575/acb9.

A. Rousseau, C. Stien, J. Gouriou, J.-M. Bordy, G. Boissonnat, I. Chabert, S. Dufreneix, V. Blideanu, “End-to-end quality assurance for stereotactic radiotherapy with Fricke-Xylenol orange-Gelatin gel dosimeter and dual-wavelength cone-beam optical CT readout”, Physica Medica, 113, 102656 (12 p.) (2023). DOI : 10.1016/j.ejmp.2023.102656.

A. Singh, X. Mougeot, S. Leblond, M. Loidl, B. Sabot, A. Nourreddine, “Development of a 4π detection system for the measurement of the shape of β spectra”, Nuclear Instruments and Methods in Physics Research A, 1053, 168354 (10 p.) (2023). DOI : 10.1016/j.nima.2023.168354.

B. Singh, M. Basunia, J. Chen, P. Dimitriou, B. Amro, S. Basu, S. Das, Diwanshu, A. Karmakar, M. Lazaric, S. Leblond, S. Nayak, C. Ngwetsheni, A. Rathi, P. Rawat, B. Rohila, V. Vallet, “Nuclear structure and decay data for A = 222 isobars”, Nuclear Data Sheets, 192, 315-421 (2023). DOI : 10.1016/j.nds.2023.10.002.

C. Stien, A. Rousseau, J.-M. Bordy, J. Gouriou, “Preliminary dosimetric characterization of EDBreast gel”, Biomedical Physics and Engineering Express 9, 055019 (21 p.) (2023). DOI : 10.1088/2057-1976/acd942.

C. Thiam et al., "New spectrometer dedicated to metrological characterization of radionuclide-based neutron sources," 2023 IEEE Nuclear Science Symposium, Medical Imaging Conference and International Symposium on Room-Temperature Semiconductor Detectors (NSS MIC RTSD), Vancouver, BC, Canada, 2023, pp. 1-1. DOI : 10.1109/NSSMICRTSD49126.2023.10338196.

V. Todorov, P. Cassette, C. Dutsov, B. Sabot, S. Georgiev, K. Mitev, “A study of the non-uniformity of the PMT photocathode response and its influence on the results obtained in different scintillation counting experiments”, Nuclear Instruments and Methods A, 1046, 167719 (9 p.) (2023). DOI : 10.1016/j.nima.2022.167719.

J. Tran-Gia, A. M. Denis-Bacelar, K. M. Ferreira, A. P. Robinson, C. Bobin, N. Calvert, S. Collins, A. J. Fenwick, D. Finocchiaro, F. Fioroni, K. Gianopoulou, E. Grassi, W. Heetun, S. J. Jewitt, M. Kotzasarlidou, M. Ljungberg, V. Lourenço, D. R. McGowan, J. Mewburn-Crook, J. Scuffham, K. Sjögreen Gleisner, B. Sabot, J. Solc, C. Thiam, J. Tipping, J. Wevrett, M. Lassmann, “On the use of solid 133Ba sources as surrogate for liquid 131I in SPECT/CT calibration - a European multi-centre evaluation”, European Journal of Nuclear Medicine and Molecular Imaging – Physics, 10, 73 (16 p.) (2023). DOI : 10.1186/s40658-023-00582-3.

S. Turkat, X. Mougeot, B. Singh, K. Zuber, “Systematics of log ft values for β- and EC/β+ transitions”, Atomic Data and Nuclear Data Tables, 152, 101584 (89 p.) (2023). DOI : 10.1016/j.adt.2023.101584.

D. Tüzün, L. Chambon, Y. Kergadallan, V. Lourenço, “Novel production method for traceable surface sources by aluminium functionalisation”, Applied Radiation and Isotopes, 202, 111045 (8 p.) (2023). DOI : 10.1016/j.apradiso.2023.111045.

T. Vinchon, M. Petit, "Methodology for an experimental drift velocity determination using a μTPC. Example in a 700mbar 95%He+5%CO2 mixture", ANIMMA 2023 – Advancements in Nuclear Instrumentation Measurement Methods and their Applications, EPJ Web of Conferences, 288 (10016), pp.5, 2023. DOI : 10.1051/epjconf/202328810016.

X. Mougeot, "Technical Meeting on Nuclear Data Needs for Antineutrino Spectra Applications", 16 au 20 janvier, AIEA, Vienne, Autriche.

Y. Ménesguen, V. Hernandez-Elvira, M.-C. Lépy, “Combien de photons ?”, presented at SOLEIL User's meeting 2023, SOLEIL 2023, Saint-Aubin, France, 18-20 jan. 2023.

J.-M. Bordy, C. Dutilleul, M. Le Roy, “High energy photon reference radiation beam for radiation protection based on medical LINAC facility”, presented at Congrès International de Métrologie (CIM 2023; Lyon, France; 7-10 March 2023).

J.-M. Bordy, C. Chardeur, K. Lahlal, J. Plagnard, “Design d’une installation d’étalonnage pour la dosimétrie d’environnement photonique”, présenté aux Journées Codes de la SFRP (JC SFRP 2023; Fontenay-aux-Roses, France; 8-10 March 2023).

M. Petit pour le LMDN “Simulations MCNP au LMDN ; Laboratoire de micro-irradiation, de métrologie et de dosimétrie des neutrons de l’IRSN“. SFRP – 7èmes Journées scientifiques Francophones. Codes de calcul en Radioprotection Radiophysique et Dosimétrie et l’apport de L’intelligence Artificielle. Fontenay-aux-Roses. 9 et 10 Mars 2023.

M. A. Kellett, "The discovery of radioactivity: The French-Polish connection", presented at 23rd International Conference on Radionuclide Metrology and its Applications, ICRM 2023, Bucharest, Romania, 27 au 31 mars 2023.

V.H. Elvira, Y. Ménesguen, M.-C. Lépy, "Radionuclide-free efficiency calibration of an HP-Ge detector using monochromatic photon beams measured with a cryogenic radiometer", presented at 23rd International Conference on Radionuclide Metrology and its Applications, ICRM 2023, Bucharest, Romania, 27 au 31 mars 2023.

M.-C. Lépy, C. Thiam et al., "A benchmark for Monte Carlo simulations in gamma-ray spectrometry - Part II: true coincidence summing correction factors", presented at 23rd International Conference on Radionuclide Metrology and its Applications, ICRM 2023, Bucharest, Romania, 27 au 31 mars 2023.

D. Tüzün, V. Lourenço, L. Chambon, Y. Kergadallan, "Novel production method for traceable surface sources by aluminium functionalisation", presented at 23rd International Conference on Radionuclide Metrology and its Applications, ICRM 2023, Bucharest, Romania, 27 au 31 mars 2023.

B. Sabot, F. Ogheard, P. Cassette, M. Hamel, P. Gervais, C. Fréchou, X. Mougeot, M. Tbatou, "Development of a portable device for primary measurement of radiopharmaceuticals volume activity", presented at 23rd International Conference on Radionuclide Metrology and its Applications, ICRM 2023, Bucharest, Romania, 27 au 31 mars 2023.

B. Sabot, X. Mougeot, P. Cassette, P. Gervais, K. Mitev, "On-site measurement of 11C and 18F half-life by TDCR counting", presented at 23rd International Conference on Radionuclide Metrology and its Applications, ICRM 2023, Bucharest, Romania, 27 au 31 mars 2023.

C. Bobin, C. Thiam, X. Mougeot, "Activity standardization of 60Co and 106Ru/106Rh by means of the TDCR method and the importance of beta spectrum", presented at 23rd International Conference on Radionuclide Metrology and its Applications, ICRM 2023, Bucharest, Romania, 27 au 31 mars 2023.

X. Mougeot, "Atomic exchange correction in forbidden unique beta transitions", presented at 23rd International Conference on Radionuclide Metrology and its Applications, ICRM 2023, Bucharest, Romania, 27 au 31 mars 2023.

S. Leblond, "New DDEP recommendations for the radioactive decay scheme of 137Cs", presented at 23rd International Conference on Radionuclide Metrology and its Applications, ICRM 2023, Bucharest, Romania, 27 au 31 mars 2023.

M.-C. Lépy, L. Chambon, B. Sabot et al., "Self-attenuation in the low-energy range: an experimental study", presented at 23rd International Conference on Radionuclide Metrology and its Applications, ICRM 2023, Bucharest, Romania, 27 au 31 mars 2023.

M.-C. Lépy, L. Chambon, B. Sabot, M. Anagnostakis, A. De Vismes, R. Galea, R. Idoeta, P. Jodlowski, K. Karfopoulos, A. Meyer, I. Mitsios, V. Peyres, P. Saganowski, N. Salpadimos, M. Savva, O. Sima, T. Thanh, R. Townson, Z. Tymiński, T. Vasilopoulou, L. Verheyen, T. Vidmar, “Self-attenuation in the low-energy range: an experimental study on 210Pb”, presented at 23rd International Conference on Radionuclide Metrology and its Applications, ICRM 2023, Bucharest, Romania, 27 au 31 mars 2023. 

M. Petit pour l’Eurados "Nuclear data for Radiation protection". JEFF – meeting. NEA - Boulogne-Billancourt (France).; le 25 avril 2023.

A. Allaoua, “Recent developments in neutron metrology at IRSN”, 25th meeting du CCRI(III); du 9 au 12 mai 2023.

David Bernard (CEA) & Michaël Petit "EURADOS / Nuclear data for Radiation protection”. The NEA High Priority Request List (HPRL) for Nuclear Data meeting; le 15 mai 2023.

J.-M. Bordy, “Tutorial – Dosimétrie du cristallin, problématiques et avancées techniques”, présenté au Congrès National de Radioprotection, SFRP 2023, Dijon, France, 13-15 juin 2023.

Diane QUEVAUVILLERS, Laurent OTTAVIANI, Michael PETIT, Christelle REYNARD-CARETTE, “Characterization and use of Stilbene scintillator for neutron metrology and spectrometry from 100 keV to 22 MeV“. ANIMMA 2023, 12 au 16 juin 2023.

D. Tüzün, V. Lourenço, L. Chambon, "Traceable surface sources by functionalization for initial mapping of nuclear facilities", ANIMMA 2023, 12 au 16 juin 2023. 

M. Agelou, G. Bertrand, G. Boissonnat, A. Bonfrate, V. Buridon, S. Heinrich, S. Kaur, C. Lynde, J. Nahimana, A. Patriarca, J. Plagnard, L. De Marzi, D. Tromson, “Fast plastic scintillator and SiPM based devices for FLASH beams monitoring”, ANIMMA 2023, 12 au 16 juin 2023. 

M.-C. Lépy, J. Riffaud et al., "Fluorescence correction for activity measurement of 93mNb in niobium dosimeters: calculation and experimental validation", 22 au 26 mai 2023, Conférence ISRD 2023 (17th International Symposium on Reactor Dosimetry), Lausanne, Suisse. 

Diane Quevauvillers, "Caractérisation et utilisation de scintillateurs pour la métrologie des neutrons et grandeurs dosimétriques associées", journées des LARD, à Strasbourg, France ; du 03 au 04 juillet 2023.

Enya Mobio, "Conception d’un champ de neutrons épithermiques et caractérisation par une méthode
de spectrométrie", journées des LARD, à Strasbourg, France ; du 03 au 04 juillet 2023.

Y. Ménesguen, V. H. Elvira, M.-C. Lépy, "Radionuclide-free efficiency calibration of X-ray detectors using a cryogenic radiometer at the synchrotron source", Conférence IRRMA 2023 (11th International Topical Meeting on Industrial Radiation and Radioisotope Measurement Applications), Bologne, Italie, 23 au 28 juillet 2023.

M. L. Zahir, M. Rodrigues M. Loidl, A. Kaur, "Energy characterization of a metallic magnetic calorimeter", Conférence IRRMA 2023 (11th International Topical Meeting on Industrial Radiation and Radioisotope Measurement Applications), Bologne, Italie, 23 au 28 juillet 2023.

M.-C. Lépy, C. Thiam et al., "A benchmark for Monte Carlo simulations in gamma-ray spectrometry", Conférence IRRMA 2023 (11th International Topical Meeting on Industrial Radiation and Radioisotope Measurement Applications), Bologne, Italie, 23 au 28 juillet 2023.

C. Dulieu, M. A. Kellett, S. Leblond, X. Mougeot, M.-C. Lépy, "Atomic and Nuclear Decay Data Evaluations at the French national metrology laboratory for ionising radiation", Conférence IRRMA 2023 (11th International Topical Meeting on Industrial Radiation and Radioisotope Measurement Applications), Bologne, Italie, 23 au 28 juillet 2023.

M.-C. Lépy, J. Riffaud et al., "Fluorescence correction for activity measurement of 93mNb in niobium dosimeters: calculation and experimental validation", Conférence IRRMA 2023 (11th International Topical Meeting on Industrial Radiation and Radioisotope Measurement Applications), Bologne, Italie, 23 au 28 juillet 2023.

A. Kaur, L. Chambon, M. Loidl, V. Lourenço, M. Rodrigues, "Determination of fractional electron capture probabilities of Nickel-59 by means of Metallic Magnetic Calorimeters", Conférence Low Temperature Detectors (LTD-20), Daejeon, South Korea, 23 au 28 juillet 2023.

M. Loidl, E. Ferrer-Ribas, L. Gastaldo, A. Kaur, S. Kempf, X.-F. Navick, M. Rodrigues, M. L. Zahir, "A low background setup for low energy X-ray detection in the context of the BabyIAXO/IAXO axion searches", Daejeon, South Korea, 23 au 28 juillet 2023.

J. Jurczak, B. Rapp, “Development of a dedicated optical system fully metrologically traceable for quantitative film dosimetry”, presented at 65th Annual Meeting of American Association of Physicists in Medicine (AAPM 2023; Houston, USA; 23-27 July 2023).

C. Besnard-Vauterin, V. Blideanu, B. Rapp, “Development of a new method for neutron spectra analysis based on a deep learning algorithm for the detection of illicit materials”. Proceedings of International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2023; Niagara Falls, Canada; 13-17 Aug. 2023).

C. Destouches, M. Petit, “REVIEW OF SOME NUCLEAR DATA NEEDS FOR NUCLEAR INSTRUMENTATION APPLICATIONS”. AEN - Workshop on nuclear physics needs for nuclear energy technology, September 20, 2023, AEN Headquarter, Issy-les-Moulineaux, France.

M. Agelou, G. H. V. Bertrand, G. Boissonnat, A. Bonfrate, V. Buridon, S. Heinrich, S. Kaur, C. Lynde, J. J. Nahimana, A. L. Patriarca, J. Plagnard, L. De Marzi, D. Tromson, “Fast plastic scintillators and SiPM based devices for FLASH beam monitoring”, presented at International Symposium on Innovative Radiation Therapies (INSIRT 2023; Orsay, France; 5-7 oct. 2023);

C. Chardeur, J.-M. Bordy, K. Lahlal, J. Plagnard, “Design of a low dose rate calibration facility for environmental radiation protection dosimetry”, presented at 4th International Conference on Dosimetry and its Applications (ICDA 2023; Valencia, Spain; 16-20 Oct. 2023).

C. Thiam, "New spectrometer dedicated to metrological characterization of radionuclide-based neutron sources", IEEE Nuclear Science Symposium, Medical Imaging Conference and International Symposium on Room-Temperature Semiconductor Detectors (NSS MIC RTSD), Vancouver, BC, Canada, 4 au 11 novembre 2023.

X. Mougeot, "The BetaShape code – validation and verification", Nuclear Data Week 2023, BNL, EU, 13 au 17 novembre 2023.

Over the last decades, antineutrino experiments conducted at short and long baselines from nuclear reactors and using detection techniques based on the inverse β-decay (IBD) have revealed a systematic and significant deficit of detected antineutrinos compared to the predicted fluxes. Besides this flux discrepancy, called the reactor antineutrino anomaly (RAA), a difference in the shape of the measured spectra compared to state-of-the-art predictions has been observed. No evidence for an experimental bias has so far been detected as the origin of these discrepancies, and the interpretation of the reactor antineutrino anomaly as a neutrino oscillation with a sterile neutrino state is currently disfavored by recent very short baseline reactor experiments. The validity of the predictions is also questioned as the source of the observed discrepancies, and has motivated a revision of the modelings of reactor antineutrino spectra. In this context, a revisited prediction has been developed and is presented in this PhD dissertation. In a nuclear reactor, antineutrinos are typically emitted during the β-decays of the products originating from the fission of four actinides making up more than 99% of the thermal power released in the core (²³⁵U, ²³⁸U, ²³⁹Pu, ²⁴¹Pu). During a beta decay, an excited nucleus ejects in correlation an electron and an antineutrino. The total emission probability and the energy spectra associated to each of these two particles are characteristic of the parent and daughter nuclei, and depend on their nuclear and atomic structures. The antineutrino spectrum emitted by a reactor core then results from the superposition of thousands of β spectra. The revised prediction is based on the summation method which consists in modeling each of these β transitions. An advanced modeling of the β-decay theory has been used to include various effects due to the Coulomb interaction between the emitted electron and the daughter nucleus through a numerical treatment. The latest evaluated nuclear data are used to model the thousands β-decays contributing to a reactor antineutrino spectrum, including the most recent data from total absorption gamma spectroscopy measurements. A thorough propagation of the uncertainties associated to both the modeling and the nuclear data evaluation has also been investigated, allowing to produce a consistent and conservative uncertainty budget for the revisited spectra. The new summation modeling is finally compared with other state-of-the-art predictions, and its improvements and limitations are discussed in regards to IBD datasets from recent short and long baseline reactor experiments.

neutrino, reactor, particle, modelling, numerical computation, β decay

Full document (EN) : https://tel.archives-ouvertes.fr/tel-03538198

A. Abeln, …, M. Loidl, …, Y. Ménesguen, …, M. Rodrigues (126 authors), “Conceptual design of BabyIAXO, the intermediate stage towards the International Axion Observatory; The IAXO collaboration”, Journal of High Energy Physics, 2021, 137, 80, DOI:10.1007/JHEP05(2021)137.

P. Agnes, …, X. Mougeot, (136 authors), “Calibration of the liquid argon ionization response to low energy electronic and nuclear recoils with DarkSide-50”, Physical Review D, 2021,104, 08200, DOI:10.1103/PhysRevD.104.082005.

G. Amoyal, Y. Menesguen, V. Schoepff, F. Carrel, M. Michel, J.-C. Angélique, N. Blanc de Lanaute, “Evaluation of Timepix3 Si and CdTe hybrid-pixel detectors spectrometric performances on X- and gamma-rays”, IEEE Transactions on Nuclear Science, 2021, 68, 229-235, DOI:10.1109/TNS.2020.3041831.

R. André, C. Bobin, J. Bobin, J. Xu, A. de Vismes Ott, “Metrological approach of gammaemitting radionuclides identification at low statistics: application of sparse spectral unmixing to scintillation detectors”, Metrologia, 2021, 58, 015011, DOI:10.1088/1681-7575/abcc06.

M. Bolzonella, M. Caresana, M. Ferrarini, R. Babut, “Characterization of a novel passive personal fast neutron dosimeter based on a CR-39 track detector in monochromatic neutron fields via Monte Carlo simulations and experiments”, Radiation measurements, 2021, 146, 106627, DOI:10.1016/j.radmeas.2021.106627.

R. Broda, I. Bonková, M. Capogni, P. Carconi, P. Cassette, R. Coulon, S. Courte, P. De Felice, T. Dziel, A. Fazio, C. Fréchou, R. Galea, E. García-Toraño, E. Kołakowska, K. Kossert, M. Krivošík, E. Lech, K. Lee, J. Liang, A. Listkowska, H. Liu, N. Navarro, O. Nähle, M. Nowicka, M. Van Rooy, B. Sabot, P. Saganowski, Y. Sato, Z. Tymiński, A. Yunoki, M. Zhang, T. Ziemek, “ Final report of the key comparison CCRI(II)-K2.Fe- 55.2019 of activity concentration measurements of a 55Fe solution”,  Metrologia, 2021, 58, 1A, 06010 , 23, DOI:10.1088/0026-1394/58/1A/06010.

F. Carrel, H. Makil, F. Lainé, R. Coulon, A. Sari, L. Brondeau, P. Cassette, M.-C. Lépy, S. Pierre, C. Thiam, C. Domergue, J.-F. Villard, P. Vigneron, G. Béroud, “Metrological characterization of intense (α, n) neutron sources by coupling of non-destructive measurements”, Nuclear Instruments and Methods in Physics Research A, 2021, 987, 164818, 10, DOI:10.1016/j.nima.2020.164818.

C. Dutsov, P. Cassette, K. Mitev, B. Sabot, “In quest of the optimal coincidence resolving time in TDCR LSC”, Nuclear Instruments and Methods in Physics Research A, 2021, 987, 164846, 12, DOI:10.1016/j.nima.2020.164846.

C. Dutsov, B. Sabot, P. Cassette, K. Mitev, “Measurement of the half-life of excited nuclear states using liquid scintillation”, Applied Radiation and Isotopes, 2021, 176, 109845, DOI:10.1016/j.apradiso.2021.109845.

S. Friedrich, G. Kim, C. Bray, R. Cantor, J. Dilling, S. Fretwell, J. Hall, A. Lennarz, V. Lordi, P. Machule, D. McKeen, X. Mougeot, F. Ponce, C. Ruiz, A. Samanta, W. Warburton, K. Leach, “Limits on the existence of sub-MeV sterile neutrinos from the decay of 7Be in superconducting quantum sensors”, Physical Review Letters, 2021, 126, 13 janvier 2021, 021803, DOI:10.1103/PhysRevLett.126.021803.

M. Hamel, B. Sabot, C. Dutsov, G. H. V. Bertrand, K. Mitev, “Tuning the decay time of liquid scintillators”, Journal of Luminescence, 2021, 235, 118021, DOI:10.1016/j.jlumin.2021.118021.

C. Kessler, D. Burns, P. Roger, F. Delaunay, M. Donois, B. Rapp, “Comparison BIPM.RI(I)-K6 of the standards for absorbed dose to water of the LNE-LNHB, France and the BIPM in accelerator photon beams”, Metrologia, 2021, 58, 1A, 06005, https://doi.org/10.1088/0026-1394/58/1A/06005.

K. Kossert, X. Mougeot, “Improved activity standardization of 90Sr/90Y by means of liquid scintillation counting”, Applied Radiation and Isotopes, 2021, 168, 109478, DOI:10.1016/j.apradiso.2020.109478.

N. Kržanović, V. Blideanu, O. Ciraj-Bjelac, J. Plagnard, W. Schoonjans, M. Živanović, J. Dabin, “Performance testing of dosimeters used in interventional radiology: Results from the VERIDIC project”, Radiation Measurements, 2021, 141, 106515, DOI: 10.1016/j.radmeas.2021.106515.

Y. Ménesguen, M.-C. Lépy, “COLEGRAM, a flexible user-friendly software for processing of ionizing radiation spectra”, Nuclear Instruments and Methods in Physics Research A, 2021,1003, 165341, DOI:10.1016/j.nima.2021.165341.

Y. Ménesguen, M.-C. Lépy, “Reference-free combined XRR-GIXRF analysis at the SOLEIL synchrotron”, Physica Status Solidi A, 2021, DOI:10.1002/pssa.202100423.

K. Mitev, S. Georgiev, B. Sabot, “Approaches for reduction of the temperature bias on radon detectors packed in anti-thoron polymer membranes”, Applied Radiation and Isotopes, 2021, 177, 109915, DOI:10.1016/j.apradiso.2021.109915.

K. Mitev, C. Dutsov, P. Cassette, B. Sabot, “Time-domain based evaluation of detection efficiency in liquid scintillation counting”, Scientific Reports, 2021, 11, 2424, 16,  DOI:10.1038/s41598-021-91873-1.

M. Petit, “Concrete Modeling for Neutron Transport and Associated Sensitivity Studies Performed at the AMANDE-MIRCOM Facility”, Nuclear Science and Engineering, 2021, 195, 864-876, DOI: 10.1080/00295639.2020.1867436.

S. Pierre, P. Cassette, B. Sabot, C. Fréchou, A. Antohe, C. Barna, P. Blahušiak, F. Cardellini, R. Dersch, A. Honig, F. Juget, M. Krivošík, A. Luca, F. J. Maringer, F. Mertes, S. Röttger, M. Sahagia, J. Slučiak, M. Stietka, L. Szűcs, C. Teodorescu, “International comparison of activity measurements of radon 222", Metrologia, 2021, 58, 06015, DOI:10.1088/0026-1394/58/1A/06015.

H. Rabus, J.-M. Gomez-Ros, C. Villagrasa, J. S. Eakins, T. Vrba, V. Blideanu, M. Zankl, R. J. Tanner, L. Struelens, H. Brkić, C. Domingo, G. Baiocco, B. Caccia, C. Huet, P. Ferrari, “Quality assurance for the use of computational methods in dosimetry: activities of EURADOS Working Group 6 - Computational Dosimetry”, Journal of Radiological Protection, 2021, 41, 46-58, DOI:10.1088/1361-6498/abd914.

J. Riffaud, M.-C. Lépy, P. Cassette, M. Corbel, M. Kellett, V. Lourenço, “Measurement of the absolute gamma-ray emission intensities from the decay of 103Pd”, Applied Radiation and Isotopes, 2021, 167, 109298, DOI:10.1016/j.apradiso.2020.109298.

N. Roberts, C. Thiam, M. Capogni, L. Silvi, “Subsequent comparison of measurements of neutron source emission rate, (2016-17) - CCRI(III)-K9.AmBe.2”, Metrologia, 2021, 58, 06025,16,  DOI:10.1088/0026-1394/58/1A/06025.

A. Röttger, A. Veres, V. Sochor, M. Pinto, M. Derlacinski, M. Ioan, A. Sabeta, R. Bernat, C. Adam-Guillermin, J. Gracia Alves, D. Glavic-Cindro, S. Bell, B. Wens, L. Persson, M. Živanovic´ and R. Nylund, “Metrology for radiation protection: a new European network in the foundation phase”, Advances in geosciences, 2021, 57, 1-7, DOI :10.5194/adgeo-57-1-2021.

A. Rousseau, C. Stien, M. Baumann, J.-M. Bordy, V. Blideanu, “OD57 - Dual wavelength reading method of Fricke-Xylenol orange-Gelatin gel dosimeters with cone-beam optical CT scanner for applications in stereotactic radiotherapy”, Physica Medica, 2021, 92, 582-583, DOI: 10.1016/S1120-1797(22)00174-0.

Y. Ménesguen, M.-C. Lépy, “Metrology of thin layer deposition with combined XRRGIXRF analysis at SOLEIL synchrotron”. Proceedings of SPIE Advanced Lithography Conference, SPIE AL 2021​​​​​​, San Jose, USA, DOI:10.1117/12.2583702, 22-26 février 2021.

J. Tran, M. Agelou, M.-N. Amiot, G. Boissonnat, C. Dehe-Pittance, H. Girard, D. Lazaro, V. Simic, D. Tromson, “Flexible radiochromic dosimeters development for complex irradiation beams”. Proceedings of 11^th International Conference on 3D Radiation Dosimetry, Quebec, Canada, DOI:10.1088/1742-6596/2167/1/012002, 15 juin 2021.

ABUDRA’A A., CHAUVENET B., GOURIOU J., PLAGNARD J., ITTI R., AUBINEAU-LANIECE I., “Dosimetry formalism and calibration procedure for electronic brachytherapy sources in terms of absorbed dose to water”, Physics in Medicine & Biology, 65, 10 Juillet 2020, 14, 145006. DOI.10.1088/1361-6560/ab9772

ADRIEN C., LE LOIREC C., DREUIL S., BORDY J.M., “ A new Monte Carlo tool for organ dose estimation in Computed Tomography “, Radioprotection,  2020, 55(2), 123–134. DOI:10.1051/radiopro/2020006

ALIANE A., AVETISSOV I., BARINOVA O., DE LA BROISE X., DANEVICH F., DUMOULIN L., DUSSOPT L., GIULIANI A., GOUDON V., KIRSANOVA S., LASSERRE T., LOIDL M., DE MARCILLAC P., MARNIEROS S., NONES C., NOVATI V., OLIVIERI E., PODA D., REDON T., RODRIGUES M., TRETYAK V., VIVIER M., WAGNER V., ZOLOTAROVA A., “First test of a Li2WO4(Mo) bolometric detector for the measurement of coherent neutrino-nucleus scattering”, Nuclear Instruments and Methods in Physics Research, 949, Janvier 2020, 162784. DOI:10.1016/j.nima.2019.162784

ANDREO P., BURNS D.T., KAPSCH R.P., MCEWEN M., VATNITSKY S., ANDERSEN C.E., BALLESTER F., BORBINHA J., DELAUNAY F., FRANCESCON P., HANLON M.D., MIRZAKHANIAN L., MUIR B., OJALA J., OLIVER C.P., PIMPINELLA M., PINTO M., DE PREZ L.A., SEUNTJENS J., SOMMIER L., TELES P., TIKKANEN J., VIJANDE J., ZINK K., "Determination of consensus kQ values for megavoltage photon beams for the update of IAEA TRS-398”, Physics in Medicine & Biology, 65, 07 Mai 2020, 09, 095011. DOI: 10.1088/1361-6560/ab807b

APRILE E., 138. other authors , X. Mougeot, “Excess electronic recoil events in XENON1T”, Physical Review, D 102, 12 Octobre 2020, 072004. DOI:10.1103/PhysRevD.102.072004

BOCKHORN L., PAULSEN M., BEYER J., KOSSERT K., LOIDL M., NÄHLE O. J., RANITZSCH P. C.-O., RODRIGUES M., “Improved source/absorber preparation for radionuclide spectrometry based on low-temperature calorimetric detectors”, Journal of Low Temperature Physics, 199, 2020, 298-305. DOI:10.1007/s10909-019-02274-8

BURNS D. T., KESSLER C., PLAGNARD J., “Key comparison BIPM.RI(I)-K3 of the air-kerma standards of the LNE-LNHB, France, and the BIPM in medium-energy x-rays”, Metrologia, 57, 1A, 2020, Tech. Suppl., 06009. DOI:10.1088/0026-1394/57/1A/06009

BURNS D. T., KESSLER C., RAPP B., “Key comparison BIPM.RI(I)-K9 of the absorbed dose to water standards of the LNE-LNHB, France, and the BIPM in medium-energy x-rays”, Metrologia, 57, 1A, 2020, Tech. Suppl. 06008. DOI:10.1088/0026-1394/57/1A/06008

CANTONE M.C., GINJAUME M., MARTIN C.J., HAMADA N ., YOKOYAMA S., BORDY J.M., DAUER L., DURÁN A., JEFFRIES C., HARRIS W., KASHIRINA O., OMANDI KOTENG A., MICHELIN S., SUDCHAI W., RADIOL. PROT J., “Report of IRPA task group on issues and actions taken in response to the change in eye lens dose limit”, Journal of Radiological Protection, 40, Novembre 2020, 4, 1508. DOI:10.1088/1361-6498/abb5ec.

CASSETTE P., ARINC A., CAPOGNI M., DE FELICE P., DUTSOV C., GALEA R., GARCIA-TORAÑO E., KOSSERT K., LIANG J., MITEV K., NÄHLE O., NEDJADI Y., OROPESA VERDECIA P., TAKÁCS M., ZIEMEK T., “Results of the CCRI(II)-K2. H-3 key comparison 2018: Measurement of the activity concentration of a tritiated-water source”, Metrologia, 57, 1A, 2020, Tech. Suppl. 06004. DOI:10.1088/0026-1394/57/1A/06004

COULON R., BRODA R., CASSETTE P., COURTE S., JEROME S., JUDGE S., KOSSERT K., LIU H., MICHOTTE C., NONIS M., “The international reference system for pure beta-emitting radionuclides: an investigation of the reproducibility of the results”, Metrologia, 57, 22 Avril 2020, 035009. DOI:10.1088/1681-7575/ab7e7b

DUMAZERT J., COULON R., CARREL F., SARI A., THIAM C., TROCMÉ M., LECOMTE Q., HAMRITA H., WOO R., LAINÉ F., FRANGVILLE C., BAKKALI M., BOUDERGUI K., KRAUSZ B., PISSARELLO R., DELALEZ R., “Inverse Problem Approach for the underwater localization of Fukushima Daiichi fuel debriwith fission chambers”, Nuclear Instruments and Methods in Physics Research, 954, 21 Février 2020, 161347. DOI: 10.1016/j.nima.2018.10.025

DUTSOV C., CASSETTE P., SABOT B., MITEV K., “Evaluation of the accidental coincidence counting rates in TDCR counting”, Nuclear Instruments and Methods in Physics Research, 977, 11 Octobre 2020, 164292. DOI:10.1016/j.nima.2020.164292

FRETWELL S., LEACH K., BRAY C., KIM G., DILLING J., LENNARZ A., MOUGEOT X., PONCE F., RUIZ C., STACKHOUSE J., FRIEDRICH S., “Direct measurement of the 7Be L/K capture ratio in Ta-based superconducting tunnel junctions”, Physical Review Letters, 125, 14 Juillet 2020, 032701. DOI:10.1103/PhysRevLett.125.032701

HASELSCHWARDT S., KOSTENSALO J., MOUGEOT X., SUHONEN J., “Improved calculations of beta decay backgrounds to new physics in liquid xenon detectors”, Physical Review C, 102, 11 Décembre 2020, 065501. DOI:10.1103/PhysRevC.102.065501

ITO Y., TOCHIO T., YAMASHITA M., FUKUSHIMA S., VLAICU A. M., MARQUES J. P., SAMPAIO J. M., GUERRA M., SANTOS J. P., SYROCKI Ł., SŁABKOWSKA K., WȨDER E., POLASIK M., RZADKIEWICZ J., INDELICATO P., MÉNESGUEN Y., LÉPY M.-C., PARENTE F., “Structure of Kα1,2- and Kβ1,3-emission xray spectra for Se, Y, and Zr”, Physical Review, A102, 20 Novembre 2020, 052820. DOI:10.1103/PhysRevA.102.052820

JEROME S., BOBIN C., CASSETTE P., DERSCH R., GALEA R., LIU H., HONIG A., KEIGHTLEY J., KOSSERT K., LIANG J., MAROULI M., MICHOTTE C., POMMÉ S., RÖTTGER S., WILLIAMS R., ZHANG M. M. M. M., “Half-life determination and comparison of activity standards of Pa-231”, Applied Radiation and Isotopes, 155, Janvier 2020, 108837. DOI:10.1016/j.apradiso.2019.108837

JORDANOV V., CASSETTE P., DUTSOV C., MITEV K., “Development and applications of miniature TDCR acquisition system for in-situ radionuclide metrology”, Nuclear Instruments and Methods in Physics Research, 954, 21 Février 2020, 161202. DOI:10.1016/j.nima.2018.09.037

KELLETT M.A., VIO L., BOBIN C., BRONDEAU L., CARDOT-MARTIN M., ISNARD H., LACOUR D., LÉPY M.-C., LOURENÇO V., MARIE M., THIAM C., “Measurement of the absolute gamma-ray emission intensities from the decay of ¹⁴⁷Nd”, Applied Radiation and Isotopes, 166, Décembre 2020, 109349, 6. DOI:10.1016/j.apradiso.2020.109349

KOSSERT K., SABOT B., CASSETTE P., COULON R., LIU H., “On the photomultiplier-tube asymmetry in TDCR systems”, Applied Radiation and Isotopes, 163, Septembre 2020, 109223. DOI:10.1016/j.apradiso.2020.109223

KOTTLER C., STEURER A., DELAUNAY F., DE POOTER J., GARCÍA MULAS C. and MIHAILESCU L.-C., “Comparison of air kerma and absorbed dose to water standards in Co-60 radiation beams for Radiotherapy”, Metrologia, 57, 2020, 1A, 06013. DOI: 10.1088/0026-1394/57/1A/06013.

LECOMPTE Y., ROSSET M., LOESS J., CHIANEA N., JOURQUIN F., CAZOULAT A., CASSETTE P., “Tritium analysis in urine by the triple-to-double coincidence ratio method with the HIDEX 300 SL liquid scintillation counter”, Radiation Protection Dosimetry, 188, Février 2020, 148-161. DOI:10.1093/rpd/ncz270

LOIDL M., BEYER J., BOCKHORN L., BONAPARTE J., ENSS C., KEMPF S., KOSSERT K., MARIAM R., NÄHLE O., PAULSEN M., RANITZSCH P., RODRIGUES M., WEGNER M., “Precision measurements of beta spectra using metallic magnetic calorimeters within the European metrology research projectMetroBeta”, Journal of Low Temperature Physics, 199, 2020, 451-460. DOI: 10.1007/s10909-020-02398-2

MARIAM R., RODRIGUES M., LOIDL M., “Determination of L-X-ray line emission intensities in the decay of Cm-244 with a metallic magnetic calorimeter”, Nuclear Instruments and Methods in Physics Research, 954, 21 février 2020, 162066. DOI:10.1016/j.nima.2019.04.020

MÉNESGUEN Y., LÉPY M.-C., “Experimental determination of L fluorescence yields of gadolinium”, X-Ray Spectrometry, 49, 22 Avril 2020, 596-602. DOI:10.1002/xrs.3157

MICHOTTE C., RATEL G., COURTE S., KOSSERT K., NÄHLE O., DERSCH R., BRANGER T., BOBIN C., YUNOKI A., SATO Y., “BIPM comparison BIPM.RI(II)-K1.Fe-59 of activity measurements of the radionuclide ⁵⁹Fe for the PTB (Germany), LNE-LNHB (France) and the NMIJ (Japan), and the linked APMP.RI(II)-K2.Fe-59 comparison”, Metrologia 57, 2020, Tech. Suppl. 06003. DOI:10.1088/0026-1394/57/1A/06003

MICHOTTE C., RATEL G., COURTE S., NONIS M., IWAHARA A., DA SILVA C., FITZGERALD R., BERGERON D., CESSNA J., LAUREANO-PEREZ L., PIBIDA L., ZIMMERMAN B.E., ZHANG M., LIANG J., LIU H., JUGET F., NEDJADI Y., FRÉCHOU C., C. BOBIN, E. , DIRICAN A., “BIPM comparison BIPM.RI(II)-K1.Ge-68 of activity measurements of the radionuclide ⁶⁸Ge for the LNMRI/IRD, NIST, NIM, IRA-METAS, LNE-LNHB and the TAEK, and the linked 2015 CCRI(II)-K2.Ge-68 comparison”, Metrologia 57, 2020, 1A, 06014. DOI:10.1088/0026-1394/57/1A/06014

MITEV K., CASSETTE P., PRESSYANOV D., GEORGIEV S., DUTSOV C., MICHIELSEN N., SABOT B.,“Methods for the experimental study of ²²⁰Rn homogeneity in calibration chambers”, Applied Radiation and Isotopes, 165, Novembre 2020, 109259. DOI:10.1016/j.apradiso.2020.109259

NOLOT E., PESSOA W., TORRENGO S., MAZEL Y., BERNARD M., GERGAUD P., MÉNESGUEN Y., LÉPY M. C., EICHERT D., “Grazing-incidence X-ray fluorescence analysis of thin chalcogenide materials deposited on Bragg mirrors”, Spectrochimica Acta B ,168, Juin 2020, 105864. DOI:10.1016/j.sab.2020.105864

OGHEARD F., CASSETTE P., BOUDAOUD A., “Development of an optical measurement method for “sampled” micro-volumes and nano-flow rates”, Flow Measurement and Instrumentation 73, Juin 2020, 101746. DOI:10.1016/j.flowmeasinst.2020.101746

PARADIS H., BOBIN C., LOURENÇO V., THIAM C., FERREUX L., DE VISMES OTT A., THEVENIN M., “Spectral unmixing applied to fast identification of γ-emitting radionuclides using NaI(Tl) detectors”, Applied Radiation and Isotopes, 158, avril 2020, 109068. DOI:10.1016/j.apradiso.2020.109068

PLOMPEN A. J. M., CABELLOS O., DE SAINT JEAN C., FLEMING M., ALGORA A., ANGELONE M., ARCHIER P., BAUGE E., BERSILLON O., BLOKHIN A., CANTARGI F., CHEBBOUBI A., DIEZ C., DUARTE H., DUPONT E., DYRDA J., ERASMUS B., FIORITO L., FISCHER U., FLAMMINI D., FOLIGNO D., GILBERT M. R., GRANADA J. R., HAECK W., HAMBSCH F.-J., HELGESSON P., HILAIRE S., HILL I., HURSIN M., ICHOU R., JACQMIN R., JANSKY B., JOUANNE C., KELLETT M. A., KIM D. H., KIM H. I., KODELI I., KONING A. J., KONOBEYEV A. Y., KOPECKY S., KOS B., KRASA A., LEAL L. C., LECLAIRE N., LECONTE P., LEE Y. O., LEEB H., LITAIZE O., MAJERLE M.,, MARQUEZ DAMIAN J. I., MICHEL-SENDIS F., MILLS R. W., MORILLON B., NOGUERE G., PECCHIA M., PELLONI S., PERESLAVTSEV P., PERRY R. J., ROCHMAN D., RÖHRMOSER A., ROMAIN P., ROMOJARO P., ROUBTSOV D., SAUVAN P., SCHILLEBEECKX P., SCHMIDT K. H., SEROT O., SIMAKOV S., SIRAKOV I., SJÖSTRAND H., STANKOVSKIY A., SUBLET J. C., TAMAGNO P., TRKOV A., VAN DER MARCK S., ÁLVAREZ-VELARDE F., VILLARI R., WARE T. C., YOKOYAMA K., ŽEROVNIK G., “The joint evaluated  fission and fusion nuclear data library, JEFF-3.3”, European Physical Journal, A 56, 14 Juillet 2020, 181. DOI:10.1140/epja/s10050-020-00141-9

RANITZSCH P. C.-O., BEYER J., BOCKHORN L., ENSS C., KOSSERT K., KEMPF S., LOIDL M., R., NÄHLE O. J., PAULSEN M., RODRIGUES M., “MetroMMC: Electron-capture spectrometry with cryogenic calorimeters for science and technology”, Journal of Low Temperature Physics 199, 2020, 441-450. DOI:10.1007/s10909-019-02278-4

RODRIGUES M., LAARRAJ M., LOIDL M.,. NAVICK X.-F, FERLAZZO L., “Preparation of drop-deposited sources in 4 pi absorbers for total decay energy spectrometry”, Journal of Low Temperature Physics, 199, 24 Février 2020, 461-466. DOI:10.1007/s10909-020-02410-9

SABOT B., RODRIGUES M., PIERRE S., “Experimental facility for the production of reference atmosphere of radioactive gases (Rn, Xe, Kr, and H isotopes)”, Applied Radiation and Isotopes, 155, Janvier 2020, 108934. DOI:10.1016/j.apradiso.2019.108934

SARI A., THIAM C., BOUDERGUI K., CARREL F., COULON R., DUMAZERT J., FRANGVILLE C., HAMRITA H., LAINE F., TROCME M., KRAUSZ B., PISSARELLO R., DELALEZ R., Janvier 2020. “Investigation of fission chamber response in the frame of fuel debris localization measurements at Fukushima Daiichi“, Radiation Measurements, 130, Janvier 2020, 106223. DOI: 10.1016/j.radmeas.2019.106223

SIMA O., DE VISMES OTT A., DIAS M., DRYAK P., FERREUX L., GURAU D., HURTADO S., JODLOWSKI P., KARFOPOULOS K., KOSKINAS M., LAUBENSTEIN M., LEE Y., LEPY M., LUCA A., MENEZES M., MOREIRA D., NIKOLIC J., PEYRES V., SAGANOWSKI P., SAVVA M., SEMMLER R., SOLC J., THANH T., TYMINSKA K., TYMINSKI Z., VIDMAR T., VUKANAC I., YUCELH., “Consistency test of coincidence-summing calculation methods for extended sources”, Applied Radiation and Isotopes, 155, Janvier 2020, 108921. DOI:10.1016/j.apradiso.2019.108921

STELIAN TUTA C., AMIOT M-N., SOMMIER L., IOAN R. M., “Alanine pellets comparison using EPR dosimetry in the frame of quality assurance for a Gamma Knife system in Romania. “, Radiation Physics And chemistry, 170, May 2020, 108653. DOI:10.1016/j.radphyschem.2019.108653.

THIAM C., DULIEU C., MOUGEOT X., NAIR A., BOBIN C., KELLETT M. A., “Nuclide++: A C++ module to include DDEP recommended radioactive decay Data in Geant4”, Applied Radiation and Isotopes, 156, Février 2020, 108964. DOI:10.1016/j.apradiso.2019.108964

TORRENGO S., EICHERT D., MAZEL Y., BERNARD M., MENESGUEN Y., LEPY M., NOLOT E., “Quantitative depth-profile analysis of transition metal nitride materials with combined grazing-incidence Xray fluorescence and X-ray reflectometry analysis”, Spectrochimica Acta, 171, Septembre 2020, 105926. DOI:10.1016/j.sab.2020.105926

XU J., DE VISMES OTT A., BOBIN J., BOBIN C., “Sparse spectral unmixing for activity estimation in γ- ray spectrometry applied to environmental measurements”, Applied Radiation and Isotopes, 156, Février 2020, 108903. DOI:10.1016/j.apradiso.2019.108903

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