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Title: Energy dependent bias in plutonium verification measurements using thermal neutron multiplicity counters

Abstract

Multiplicity analysis algorithms are extended to include the effect of ({alpha}, n) neutron energies on the detector efficiencies, induced fission probabilities, and induced fission factorial moments. The analysis is restricted to plutonium oxide. Bias is calculated as a function of ({alpha}, n) neutron energy for six thermal neutron coincidence counters: HLNC, AWCC, 3RMC, PSMC, PYRO, and 5RMC. Ring ratio data for the 3RMC are used to reduce energy dependent bias in the verification of impure plutonium oxide. The utility of the AWCC as a multiplicity counter is considered.

Authors:
; ;
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
538022
Report Number(s):
LA-UR-97-3427; CONF-971031-
ON: DE98000279; TRN: 98:000093
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: International Atomic Energy Agency symposium on international safeguards, Vienna (Austria), 13-17 Oct 1997; Other Information: PBD: 1997
Country of Publication:
United States
Language:
English
Subject:
05 NUCLEAR FUELS; PLUTONIUM; VERIFICATION; NUCLEAR MATERIALS MANAGEMENT; THERMAL NEUTRONS; NEUTRON DETECTION; COINCIDENCE METHODS; ERRORS; ACCURACY; MOMENTS METHOD

Citation Formats

Krick, M S, Langner, D G, and Stewart, J E. Energy dependent bias in plutonium verification measurements using thermal neutron multiplicity counters. United States: N. p., 1997. Web.
Krick, M S, Langner, D G, & Stewart, J E. Energy dependent bias in plutonium verification measurements using thermal neutron multiplicity counters. United States.
Krick, M S, Langner, D G, and Stewart, J E. 1997. "Energy dependent bias in plutonium verification measurements using thermal neutron multiplicity counters". United States. https://www.osti.gov/servlets/purl/538022.
@article{osti_538022,
title = {Energy dependent bias in plutonium verification measurements using thermal neutron multiplicity counters},
author = {Krick, M S and Langner, D G and Stewart, J E},
abstractNote = {Multiplicity analysis algorithms are extended to include the effect of ({alpha}, n) neutron energies on the detector efficiencies, induced fission probabilities, and induced fission factorial moments. The analysis is restricted to plutonium oxide. Bias is calculated as a function of ({alpha}, n) neutron energy for six thermal neutron coincidence counters: HLNC, AWCC, 3RMC, PSMC, PYRO, and 5RMC. Ring ratio data for the 3RMC are used to reduce energy dependent bias in the verification of impure plutonium oxide. The utility of the AWCC as a multiplicity counter is considered.},
doi = {},
url = {https://www.osti.gov/biblio/538022}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Oct 01 00:00:00 EDT 1997},
month = {Wed Oct 01 00:00:00 EDT 1997}
}

Conference:
Other availability
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