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Title: A method to quantify the 37Ar emanation fraction in powders and rocks

Abstract

A system was developed to quantify the emanation fraction from samples ranging in size from powder to small rocks. Various rock types were crushed and sieved to various grades before being encapsulated in quartz ampoules. The samples were then irradiated at the Device Assembly Facility at the Nevada National Security Site before being returned to PNNL where the argon gas, produced via neutron activation of calcium, was extracted on a custom apparatus and cryogenically trapped. The extracted gas was then processed to separate the argon and load it into a proportional counter for counting. The emanation fraction of argon gas was then calculated by comparing the measured and predicted activities.

Authors:
ORCiD logo; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1489247
Report Number(s):
PNNL-SA-133389
Journal ID: ISSN 0236-5731
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Journal of Radioanalytical and Nuclear Chemistry
Additional Journal Information:
Journal Volume: 318; Journal Issue: 1; Journal ID: ISSN 0236-5731
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
37Ar, Emanation coefficient, Neutron activation, Radioargon, Gas processing

Citation Formats

Johnson, Christine, Prinke, Amanda, Lowrey, Justin D., Humble, Paul, Mace, Emily, Alexander, Thomas, Riley, Brian J., and Williams, Richard. A method to quantify the 37Ar emanation fraction in powders and rocks. United States: N. p., 2018. Web. doi:10.1007/s10967-018-6024-9.
Johnson, Christine, Prinke, Amanda, Lowrey, Justin D., Humble, Paul, Mace, Emily, Alexander, Thomas, Riley, Brian J., & Williams, Richard. A method to quantify the 37Ar emanation fraction in powders and rocks. United States. doi:10.1007/s10967-018-6024-9.
Johnson, Christine, Prinke, Amanda, Lowrey, Justin D., Humble, Paul, Mace, Emily, Alexander, Thomas, Riley, Brian J., and Williams, Richard. Thu . "A method to quantify the 37Ar emanation fraction in powders and rocks". United States. doi:10.1007/s10967-018-6024-9.
@article{osti_1489247,
title = {A method to quantify the 37Ar emanation fraction in powders and rocks},
author = {Johnson, Christine and Prinke, Amanda and Lowrey, Justin D. and Humble, Paul and Mace, Emily and Alexander, Thomas and Riley, Brian J. and Williams, Richard},
abstractNote = {A system was developed to quantify the emanation fraction from samples ranging in size from powder to small rocks. Various rock types were crushed and sieved to various grades before being encapsulated in quartz ampoules. The samples were then irradiated at the Device Assembly Facility at the Nevada National Security Site before being returned to PNNL where the argon gas, produced via neutron activation of calcium, was extracted on a custom apparatus and cryogenically trapped. The extracted gas was then processed to separate the argon and load it into a proportional counter for counting. The emanation fraction of argon gas was then calculated by comparing the measured and predicted activities.},
doi = {10.1007/s10967-018-6024-9},
journal = {Journal of Radioanalytical and Nuclear Chemistry},
issn = {0236-5731},
number = 1,
volume = 318,
place = {United States},
year = {2018},
month = {7}
}

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