Nondestructive Determination of 235U Enrichment of Uranium Samples in the Presence of Actinides (232Th, 236U, 237Np)

International Conference for Young Scientists, Specialists, and Postgraduates on Nuclear Reactor Physics 2016

Stogov, Yu V.^1

Department of Theoretical and Experimental Physics of Nuclear Reactors, National Research Nuclear University, MEPhI (Moscow Engineering Physics Institute), Kashirskoe highway, 31, Moscow, Russia^1

关键词: Gamma spectrum;    Gamma-ray spectrum;    Ge detectors;    Isotopic abundances;    Low energy x rays;    Low-enriched uranium;    Nondestructive determination;    Reference samples;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/781/1/012016/pdf
DOI  :  10.1088/1742-6596/781/1/012016

来源: IOP

【 摘 要 】

The measurements were performed using a planar Ge detector. The multi-group analysis (MGA) for the determination isotopic abundances in low enriched uranium samples is applied in this study. In order to perform the analysis of complex gamma-spectrums, were taken a number of gamma-spectrums of single reference samples, containing235U,238U,232Th,236U,237Np with declared isotopic abundance. The gamma-ray spectrums in the range of low energy X-ray and gamma-ray peaks of these samples were obtained and analyzed.