Near Real-Time Nondestructive Active Inspection Technologies Utilizing Delayed ??-Rays and Neutrons for Advanced Safeguards

Hunt, Alan¹  Reedy, E. T.E.²  Mozin, V.³  Tobin, S. J.⁴ 

[1] Idaho State Univ., Pocatello, ID (United States). Idaho Accelerator Center, Dept. of Physics;Idaho State Univ., Pocatello, ID (United States). Dept. of Phyics, Idaho Accelerator Center;Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States);Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Nuclear Nonproliferation

关键词: DELAYED GAMMA RADIATION;    DELAYED NEUTRONS;    COMPUTERIZED SIMULATION;    AQUEOUS SOLUTIONS;    SAFEGUARDS;    MONTE CARLO METHOD;    COMPARATIVE EVALUATIONS;    FISSION FRAGMENTS;    FISSIONABLE MATERIALS;    BENCHMARKS;    INSPECTION;    CORRELATIONS;    EMISSION;    NUCLEAR REACTION ANALYSIS;    PULSES;    SOLIDS;    GAMMA SPECTRA;    GAMMA SPECTROSCOPY;   

DOI  :  10.2172/1172633
RP-ID  :  DOE/NNSA-IUP--09-772
PID  :  OSTI ID: 1172633
Others  :  Other: 09-772
Others  :  TRN: US1600516

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来源: SciTech Connect

【 摘 要 】

In this two year project, the research team investigated how delayed ??-rays from short-lived fission fragments detected in the short interval between irradiating pulses can be exploited for advanced safeguards technologies. This program contained experimental and modeling efforts. The experimental effort measured the emitted spectra, time histories and correlations of the delayed ??-rays from aqueous solutions and solid targets containing fissionable isotopes. The modeling effort first developed and benchmarked a hybrid Monte Carlo simulation technique based on these experiments. The benchmarked simulations were then extended to other safeguards scenarios, allowing comparisons to other advanced safeguards technologies and to investigate combined techniques. Ultimately, the experiments demonstrated the possible utility of actively induced delayed ??-ray spectroscopy for fissionable material assay.