Special Nuclear Material Gamma-Ray Signatures for Reachback Analysts

Karpius, Peter Joseph¹  Myers, Steven Charles¹ 

[1] Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

关键词: gamma;    plutonium;    special nuclear material;   

DOI  :  10.2172/1312618
RP-ID  :  LA-UR--16-26068
PID  :  OSTI ID: 1312618

美国|英语

来源: SciTech Connect

【 摘 要 】

These are slides on special nuclear material gamma-ray signatures for reachback analysts for an LSS Spectroscopy course. The closing thoughts for this presentation are the following: SNM materials have definite spectral signatures that should be readily recognizable to analysts in both bare and shielded configurations. One can estimate burnup of plutonium using certain pairs of peaks that are a few keV apart. In most cases, one cannot reliably estimate uranium enrichment in an analogous way to the estimation of plutonium burnup. The origin of the most intense peaks from some SNM items may be indirect and from ???associated nuclides.' Indirect SNM signatures sometimes have commonalities with the natural gamma-ray background.