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Title: Utilization of high-energy neutrons for the detection of fissionable materials

Abstract

The detection of high-energy prompt fission neutrons was investigated as a method of fissionable material detection. Neutron energy spectra of {sup 238}U and several nonfissionable materials were measured using a neutron time of flight spectrometer. The photonuclear reactions were induced in the targets using a pulsed bremsstrahlung beam for several endpoint energies between 8 and 15 MeV. While fission neutrons can have energies in excess of 10 MeV, neutrons emitted from nonfissionable materials have distinct energy limits that depend upon binding and incident particle energies. Hence the presence of high-energy neutrons can be used to discriminate fissionable from most nonfissionable materials.

Authors:
; ; ; ; ;  [1]
  1. Idaho Accelerator Center, Idaho State University, Pocatello, Idaho 83209-8263 and Department of Physics, Idaho State University, Pocatello, Idaho 83209-8106 (United States)
Publication Date:
OSTI Identifier:
20971834
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 90; Journal Issue: 7; Other Information: DOI: 10.1063/1.2472542; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BREMSSTRAHLUNG; ENERGY SPECTRA; FISSION NEUTRONS; FISSIONABLE MATERIALS; MEV RANGE 01-10; MEV RANGE 10-100; NEUTRON DETECTION; NEUTRON SPECTRA; NEUTRON SPECTROMETERS; NUCLEAR FUELS; PHOTONUCLEAR REACTIONS; REACTOR FUELING; TIME-OF-FLIGHT SPECTROMETERS; URANIUM 238

Citation Formats

Thompson, S. J., Kinlaw, M. T., Harmon, J. F., Wells, D. P., Farfan, E. B., and Hunt, A. W.. Utilization of high-energy neutrons for the detection of fissionable materials. United States: N. p., 2007. Web. doi:10.1063/1.2472542.
Thompson, S. J., Kinlaw, M. T., Harmon, J. F., Wells, D. P., Farfan, E. B., & Hunt, A. W.. Utilization of high-energy neutrons for the detection of fissionable materials. United States. doi:10.1063/1.2472542.
Thompson, S. J., Kinlaw, M. T., Harmon, J. F., Wells, D. P., Farfan, E. B., and Hunt, A. W.. Mon . "Utilization of high-energy neutrons for the detection of fissionable materials". United States. doi:10.1063/1.2472542.
@article{osti_20971834,
title = {Utilization of high-energy neutrons for the detection of fissionable materials},
author = {Thompson, S. J. and Kinlaw, M. T. and Harmon, J. F. and Wells, D. P. and Farfan, E. B. and Hunt, A. W.},
abstractNote = {The detection of high-energy prompt fission neutrons was investigated as a method of fissionable material detection. Neutron energy spectra of {sup 238}U and several nonfissionable materials were measured using a neutron time of flight spectrometer. The photonuclear reactions were induced in the targets using a pulsed bremsstrahlung beam for several endpoint energies between 8 and 15 MeV. While fission neutrons can have energies in excess of 10 MeV, neutrons emitted from nonfissionable materials have distinct energy limits that depend upon binding and incident particle energies. Hence the presence of high-energy neutrons can be used to discriminate fissionable from most nonfissionable materials.},
doi = {10.1063/1.2472542},
journal = {Applied Physics Letters},
number = 7,
volume = 90,
place = {United States},
year = {Mon Feb 12 00:00:00 EST 2007},
month = {Mon Feb 12 00:00:00 EST 2007}
}