A5070353269- Radioactive Decay and Measurement Techniques
- Radioactivity and Radon Measurements
- Scientific Measurement and Uncertainty Evaluation
- Radiation Detection and Scintillator Technologies
- Nuclear Physics and Applications
- Radiation Therapy and Dosimetry
- Radiation Effects and Dosimetry
- Neutrino Physics Research
- X-ray Spectroscopy and Fluorescence Analysis
- Particle Detector Development and Performance
- Radiation Dose and Imaging
- Advanced Radiotherapy Techniques
CEA LIST
2010-2022
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2003-2022
CEA Paris-Saclay
2006-2022
Laboratoire de Mesure du Carbone 14
2022
Laboratoire National Henri Becquerel
2003-2019
The hypothesis that proximity to the Sun causes variation of decay constants at permille level has been tested and disproved. Repeated activity measurements mono-radionuclide sources were performed over periods from 200 days up four decades 14 laboratories across globe. Residuals exponential nuclear curves inspected for annual oscillations. Systematic deviations a purely curve differ one data set another are attributable instabilities in instrumentation measurement conditions. most stable...
Pressurized re-entrant (or 4π) ionization chambers (ICs) connected to current-measuring electronics are used for activity measurements of photon emitting radionuclides and some beta emitters in the fields metrology nuclear medicine. As a secondary method, these instruments need be calibrated with appropriate standards from primary or direct standardization. The use over 50 years has been well described numerous publications, such as Monographie BIPM-4 special issue Metrologia on radionuclide...
When new materials appear as potential alternatives for radiation detection, several criteria have to be fulfilled.
Abstract In vivo dosimetry for patient radioprotection is a real challenge concerning new radiotherapy treatments. this study we aim to develop dosimeter based on tissue equivalent material, flexible and adaptable the morphology in order perform complex irradiation beams. Here, report evaluation standard beams of highly composed silicone elastomer containing leucomalachite green as radiochromic dye give first estimation LMG-micelle hydrogel response. All results are compared commercially...
In the context of high-energy physics experiments, particle accelerators create a significant dose radiations, up to 10 6 Gy for example at Large Hadron Collider (LHC, Cern).Control detectors, such as scintillators, are affected by these high irradiation levels.The literature mentions that light yield organic scintillators dramatically drops when strongly irradiated.However, tested can recover some their output with time.To best our knowledge, only luminescent properties plastic were...