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Title: Passive neutron assay of irradiated nuclear fuels

Abstract

Passive neutron assay of irradiated nuclear fuel has been investigated by calculations and experiments as a simple, complementary technique to the gamma assay. From the calculations it was found that the neutron emission arises mainly from the curium isotopes, the neutrons exhibit very good penetrability of the assemblies, and the neutron multiplication is not affected by the burnup. From the experiments on BWR and PWR assemblies, the neutron emission rate is proportional to burnup raised to 3.4 power. The investigations indicate that the passive neutron assay is a simple and useful technique to determine the consistency of burnups between assemblies.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Los Alamos Scientific Lab., NM (USA)
OSTI Identifier:
6170990
Report Number(s):
LA-7645-MS
TRN: 79-012134
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; SPENT FUELS; NONDESTRUCTIVE ANALYSIS; BWR TYPE REACTORS; FUEL ASSEMBLIES; NEUTRON DETECTION; PWR TYPE REACTORS; CHEMICAL ANALYSIS; DETECTION; ENERGY SOURCES; FUELS; NUCLEAR FUELS; RADIATION DETECTION; REACTOR MATERIALS; REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS; 050800* - Nuclear Fuels- Spent Fuels Reprocessing; 400103 - Radiometric & Radiochemical Procedures- (-1987)

Citation Formats

Hsue, S.T., Stewart, J.E., Kaieda, K., Halbig, J.K., Phillips, J.R., Lee, D.M., and Hatcher, C.R. Passive neutron assay of irradiated nuclear fuels. United States: N. p., 1979. Web. doi:10.2172/6170990.
Hsue, S.T., Stewart, J.E., Kaieda, K., Halbig, J.K., Phillips, J.R., Lee, D.M., & Hatcher, C.R. Passive neutron assay of irradiated nuclear fuels. United States. doi:10.2172/6170990.
Hsue, S.T., Stewart, J.E., Kaieda, K., Halbig, J.K., Phillips, J.R., Lee, D.M., and Hatcher, C.R. Thu . "Passive neutron assay of irradiated nuclear fuels". United States. doi:10.2172/6170990. https://www.osti.gov/servlets/purl/6170990.
@article{osti_6170990,
title = {Passive neutron assay of irradiated nuclear fuels},
author = {Hsue, S.T. and Stewart, J.E. and Kaieda, K. and Halbig, J.K. and Phillips, J.R. and Lee, D.M. and Hatcher, C.R.},
abstractNote = {Passive neutron assay of irradiated nuclear fuel has been investigated by calculations and experiments as a simple, complementary technique to the gamma assay. From the calculations it was found that the neutron emission arises mainly from the curium isotopes, the neutrons exhibit very good penetrability of the assemblies, and the neutron multiplication is not affected by the burnup. From the experiments on BWR and PWR assemblies, the neutron emission rate is proportional to burnup raised to 3.4 power. The investigations indicate that the passive neutron assay is a simple and useful technique to determine the consistency of burnups between assemblies.},
doi = {10.2172/6170990},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {2}
}