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

In this two year project, the research team investigated how delayed γ-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 γ-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 γ-ray spectroscopy for fissionable material assay.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. Idaho State Univ., Pocatello, ID (United States). Idaho Accelerator Center, Dept. of Physics
  2. Idaho State Univ., Pocatello, ID (United States). Dept. of Phyics, Idaho Accelerator Center
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Nuclear Nonproliferation
Publication Date:
OSTI Identifier:
1172633
Report Number(s):
DOE/NNSA-IUP--09-772
09-772; TRN: US1600516
DOE Contract Number:
AC07-05ID14517
Resource Type:
Technical Report
Research Org:
Idaho State Univ., Pocatello, ID (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA). Integrated University Programs
Country of Publication:
United States
Language:
English
Subject:
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 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