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Title: Measurement of 37Ar to support technology for On-site Inspection under the Comprehensive Nuclear-Test-Ban Treaty

Abstract

On-Site Inspection (OSI) is a key component of the verification regime for the Comprehensive Nuclear-Test-Ban Treaty (CTBT). Measurements of radionuclide isotopes created by an underground nuclear explosion are a valuable signature of a Treaty violation. Argon-37 is produced from neutron interaction with calcium in soil, 40Ca(n,α)37Ar. For OSI, the 35-day half-life of 37Ar provides both high specific activity and sufficient time for completion of an inspection before decay limits sensitivity. This paper presents a low-background internal-source gas proportional counter with an 37Ar measurement sensitivity level equivalent to 45.1 mBq/SCM in whole air.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1025653
Report Number(s):
PNNL-SA-73256
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, 652(1):58-61
Additional Journal Information:
Journal Volume: 652; Journal Issue: 1
Country of Publication:
United States
Language:
English
Subject:
Nuclear weapons monitoring; CTBT On-site Inspection; Radioactive argon isotopes; Low energy threshold proportional counter

Citation Formats

Aalseth, Craig E., Day, Anthony R., Haas, Derek A., Hoppe, Eric W., Hyronimus, Brian J., Keillor, Martin E., Mace, Emily K., Orrell, John L., Seifert, Allen, and Woods, Vincent T. Measurement of 37Ar to support technology for On-site Inspection under the Comprehensive Nuclear-Test-Ban Treaty. United States: N. p., 2011. Web. doi:10.1016/j.nima.2010.09.135.
Aalseth, Craig E., Day, Anthony R., Haas, Derek A., Hoppe, Eric W., Hyronimus, Brian J., Keillor, Martin E., Mace, Emily K., Orrell, John L., Seifert, Allen, & Woods, Vincent T. Measurement of 37Ar to support technology for On-site Inspection under the Comprehensive Nuclear-Test-Ban Treaty. United States. doi:10.1016/j.nima.2010.09.135.
Aalseth, Craig E., Day, Anthony R., Haas, Derek A., Hoppe, Eric W., Hyronimus, Brian J., Keillor, Martin E., Mace, Emily K., Orrell, John L., Seifert, Allen, and Woods, Vincent T. Sat . "Measurement of 37Ar to support technology for On-site Inspection under the Comprehensive Nuclear-Test-Ban Treaty". United States. doi:10.1016/j.nima.2010.09.135.
@article{osti_1025653,
title = {Measurement of 37Ar to support technology for On-site Inspection under the Comprehensive Nuclear-Test-Ban Treaty},
author = {Aalseth, Craig E. and Day, Anthony R. and Haas, Derek A. and Hoppe, Eric W. and Hyronimus, Brian J. and Keillor, Martin E. and Mace, Emily K. and Orrell, John L. and Seifert, Allen and Woods, Vincent T.},
abstractNote = {On-Site Inspection (OSI) is a key component of the verification regime for the Comprehensive Nuclear-Test-Ban Treaty (CTBT). Measurements of radionuclide isotopes created by an underground nuclear explosion are a valuable signature of a Treaty violation. Argon-37 is produced from neutron interaction with calcium in soil, 40Ca(n,α)37Ar. For OSI, the 35-day half-life of 37Ar provides both high specific activity and sufficient time for completion of an inspection before decay limits sensitivity. This paper presents a low-background internal-source gas proportional counter with an 37Ar measurement sensitivity level equivalent to 45.1 mBq/SCM in whole air.},
doi = {10.1016/j.nima.2010.09.135},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, 652(1):58-61},
number = 1,
volume = 652,
place = {United States},
year = {2011},
month = {10}
}