Publications by authors named "L Brondeau"
Measurement of the absolute gamma-ray emission intensities from the decay of Nd.
Appl Radiat Isot
December 2020
The 2011 Decay Data Evaluation Project (DDEP) evaluation for Nd includes recommended absolute emission intensities for the two main gamma-rays at 91.105 (2) keV and 531.016 (22) keV of 0.
View Article and Find Full Text PDFThe efficiency calibration for different high-purity germanium detectors in the low-energy range was established by the conventional method, using standard radioactive sources. The peak shapes were carefully analysed taking account of natural linewidth, full-energy width at half maximum and scattering. Complementary information was obtained by Monte Carlo simulation using the PENELOPE code, after optimization of the geometrical parameters.
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- The iodine-131 solution's activity was precisely measured using two methods: the 4πβ-γ coincidence and the 4πγ counting technique.
- A calibrated solution was created to produce point sources, with a preliminary step of adding AgNO3 to minimize iodine loss.
- Gamma-ray spectrometry was employed to determine the emission intensities of 15 gamma-rays and two K X-rays from xenon, achieving a relative uncertainty of 0.8% for the main emissions.
In this study, different aspects of the Compton scattering inside volume sources are illustrated using experimental approach and Monte Carlo simulation. For the low-energy range (below 100 keV) scattered events represents around 30% of the whole spectrum. Influence of the source-detector geometry is discussed.
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