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

Technical Report · Thu Feb 12 00:00:00 EST 2015

DOI:https://doi.org/10.2172/1172633· OSTI ID:1172633

Hunt, Alan ^[1]; Reedy, E. T.E. ^[2]; Mozin, V. ^[3]; Tobin, S. J. ^[4]

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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

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.

• Research Organization: Idaho State Univ., Pocatello, ID (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA). Integrated University Programs
• DOE Contract Number: AC07-05ID14517
• OSTI ID: 1172633
• Report Number(s): DOE/NNSA-IUP-09-772; 09-772; TRN: US1600516
• Country of Publication: United States
• Language: English

Related Subjects

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