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Title: Simultaneous measurement of tritium and radiocarbon by ultra-low-background proportional counting

Use of ultra-low-background capabilities at Pacific Northwest National Laboratory provide enhanced sensitivity for measurement of low-activity sources of tritium and radiocarbon using proportional counters. Tritium levels are nearly back to pre-nuclear test backgrounds (~2-8 TU in rainwater), which can complicate their dual measurement with radiocarbon due to overlap in the beta decay spectra. In this paper, we present results of single-isotope proportional counter measurements used to analyze a dual-isotope methane sample synthesized from ~120 mg of H 2O and present sensitivity results.
Authors:
 [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-120393
Journal ID: ISSN 0969-8043; PII: S0969804316305668
Grant/Contract Number:
AC05-76RL01830
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 Laboratory Directed Research and Development (LDRD) Program
Country of Publication:
United States
Language:
English
Subject:
07 ISOTOPE AND RADIATION SOURCES; Tritium; Radiocarbon; Ultra-low-background; Proportional counting; Dual-isotope measurements
OSTI Identifier:
1343944

Mace, Emily, Aalseth, Craig, Alexander, Tom, Back, Henning, Day, Anthony, Hoppe, Eric, Keillor, Martin, Moran, Jim, Overman, Cory, Panisko, Mark, and Seifert, Allen. Simultaneous measurement of tritium and radiocarbon by ultra-low-background proportional counting. United States: N. p., Web. doi:10.1016/J.APRADISO.2016.12.033.
Mace, Emily, Aalseth, Craig, Alexander, Tom, Back, Henning, Day, Anthony, Hoppe, Eric, Keillor, Martin, Moran, Jim, Overman, Cory, Panisko, Mark, & Seifert, Allen. Simultaneous measurement of tritium and radiocarbon by ultra-low-background proportional counting. United States. doi:10.1016/J.APRADISO.2016.12.033.
Mace, Emily, Aalseth, Craig, Alexander, Tom, Back, Henning, Day, Anthony, Hoppe, Eric, Keillor, Martin, Moran, Jim, Overman, Cory, Panisko, Mark, and Seifert, Allen. 2016. "Simultaneous measurement of tritium and radiocarbon by ultra-low-background proportional counting". United States. doi:10.1016/J.APRADISO.2016.12.033. https://www.osti.gov/servlets/purl/1343944.
@article{osti_1343944,
title = {Simultaneous measurement of tritium and radiocarbon by ultra-low-background proportional counting},
author = {Mace, Emily and Aalseth, Craig and Alexander, Tom and Back, Henning and Day, Anthony and Hoppe, Eric and Keillor, Martin and Moran, Jim and Overman, Cory and Panisko, Mark and Seifert, Allen},
abstractNote = {Use of ultra-low-background capabilities at Pacific Northwest National Laboratory provide enhanced sensitivity for measurement of low-activity sources of tritium and radiocarbon using proportional counters. Tritium levels are nearly back to pre-nuclear test backgrounds (~2-8 TU in rainwater), which can complicate their dual measurement with radiocarbon due to overlap in the beta decay spectra. In this paper, we present results of single-isotope proportional counter measurements used to analyze a dual-isotope methane sample synthesized from ~120 mg of H2O and present sensitivity results.},
doi = {10.1016/J.APRADISO.2016.12.033},
journal = {Applied Radiation and Isotopes},
number = ,
volume = 126,
place = {United States},
year = {2016},
month = {12}
}