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Title: Development of a low-level 39Ar calibration standard – Analysis by absolute gas counting measurements augmented with simulation

Here, this paper describes the generation of 39Ar, via reactor irradiation of potassium carbonate, followed by quantitative analysis (length-compensated proportional counting) to yield two calibration standards that are respectively 50 and 3 times atmospheric background levels. Measurements were performed in Pacific Northwest National Laboratory's shallow underground counting laboratory studying the effect of gas density on beta-transport; these results are compared with simulation. The total expanded uncertainty of the specific activity for the ~50 × 39Ar in P10 standard is 3.6% (k=2).
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Publication Date:
Report Number(s):
PNNL-SA-120659
Journal ID: ISSN 0969-8043; PII: S0969804316306297
Grant/Contract Number:
AC057601830
Type:
Accepted Manuscript
Journal Name:
Applied Radiation and Isotopes
Additional Journal Information:
Journal Volume: 126; Journal ID: ISSN 0969-8043
Publisher:
Elsevier
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
07 ISOTOPE AND RADIATION SOURCES; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; absolute radiation measurement; length compensated proportional counting; ultra-low background; electroformed copper; uncertainty Analysis
OSTI Identifier:
1347963

Williams, Richard M., Aalseth, C. E., Brandenberger, J. M., Day, A. R., Finn, E., Fuller, E. S., Hoppe, E. W., Humble, P. H., Keillor, M. E., Mace, E. K., Myers, A. W., Overman, C. T., Panisko, M. E., Seifert, A., and White, S. K.. Development of a low-level 39Ar calibration standard – Analysis by absolute gas counting measurements augmented with simulation. United States: N. p., Web. doi:10.1016/j.apradiso.2017.02.018.
Williams, Richard M., Aalseth, C. E., Brandenberger, J. M., Day, A. R., Finn, E., Fuller, E. S., Hoppe, E. W., Humble, P. H., Keillor, M. E., Mace, E. K., Myers, A. W., Overman, C. T., Panisko, M. E., Seifert, A., & White, S. K.. Development of a low-level 39Ar calibration standard – Analysis by absolute gas counting measurements augmented with simulation. United States. doi:10.1016/j.apradiso.2017.02.018.
Williams, Richard M., Aalseth, C. E., Brandenberger, J. M., Day, A. R., Finn, E., Fuller, E. S., Hoppe, E. W., Humble, P. H., Keillor, M. E., Mace, E. K., Myers, A. W., Overman, C. T., Panisko, M. E., Seifert, A., and White, S. K.. 2017. "Development of a low-level 39Ar calibration standard – Analysis by absolute gas counting measurements augmented with simulation". United States. doi:10.1016/j.apradiso.2017.02.018. https://www.osti.gov/servlets/purl/1347963.
@article{osti_1347963,
title = {Development of a low-level 39Ar calibration standard – Analysis by absolute gas counting measurements augmented with simulation},
author = {Williams, Richard M. and Aalseth, C. E. and Brandenberger, J. M. and Day, A. R. and Finn, E. and Fuller, E. S. and Hoppe, E. W. and Humble, P. H. and Keillor, M. E. and Mace, E. K. and Myers, A. W. and Overman, C. T. and Panisko, M. E. and Seifert, A. and White, S. K.},
abstractNote = {Here, this paper describes the generation of 39Ar, via reactor irradiation of potassium carbonate, followed by quantitative analysis (length-compensated proportional counting) to yield two calibration standards that are respectively 50 and 3 times atmospheric background levels. Measurements were performed in Pacific Northwest National Laboratory's shallow underground counting laboratory studying the effect of gas density on beta-transport; these results are compared with simulation. The total expanded uncertainty of the specific activity for the ~50 × 39Ar in P10 standard is 3.6% (k=2).},
doi = {10.1016/j.apradiso.2017.02.018},
journal = {Applied Radiation and Isotopes},
number = ,
volume = 126,
place = {United States},
year = {2017},
month = {2}
}