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Title: Setting a limit on anthropogenic sources of atmospheric 81Kr through Atom Trap Trace Analysis

Abstract

In this study, we place a 2.5% limit on the anthropogenic contribution to the modern abundance of 81Kr/Kr in the atmosphere at the 90% confidence level. Due to its simple production and transport in the terrestrial environment, 81Kr (half-life = 230,000 years) is an ideal tracer for old water and ice with mean residence times in the range of 105–106 years. In recent years, 81Kr-dating has been made available to the earth science community thanks to the development of Atom Trap Trace Analysis (ATTA), a laser-based atom counting technique. Further upgrades and improvements to the ATTA technique now allow us to demonstrate 81Kr/Kr measurements with relative uncertainties of 1% and place this new limit on anthropogenic 81Kr. As a result of this limit, we have removed a potential systematic constraint for 81Kr-dating.

Authors:
 [1];  [2];  [3];  [2];  [2];  [2];  [4]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division; Univ. of Chicago, IL (United States). Department of Physics and Enrico Fermi Institute
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division
  3. University of Science and Technology of China, Hefei (China). School of Nuclear Science and Engineerin
  4. University of Bern (Switzerland). Climate and Environmental Physics Division, Physics Institute
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1356576
Alternate Identifier(s):
OSTI ID: 1413359
Grant/Contract Number:  
AC02-06CH11357; DEAC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Chemical Geology
Additional Journal Information:
Journal Volume: 453; Journal Issue: C; Journal ID: ISSN 0009-2541
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 81 Kr; Groundwater dating; Anthropogenic effects; Radioisotope tracers; Noble gas tracers; Atom Trap Trace Analysis

Citation Formats

Zappala, J. C., Bailey, K., Jiang, W., Micklich, B., Mueller, P., O’Connor, T. P., and Purtschert, R.. Setting a limit on anthropogenic sources of atmospheric 81Kr through Atom Trap Trace Analysis. United States: N. p., 2017. Web. doi:10.1016/j.chemgeo.2017.02.007.
Zappala, J. C., Bailey, K., Jiang, W., Micklich, B., Mueller, P., O’Connor, T. P., & Purtschert, R.. Setting a limit on anthropogenic sources of atmospheric 81Kr through Atom Trap Trace Analysis. United States. doi:10.1016/j.chemgeo.2017.02.007.
Zappala, J. C., Bailey, K., Jiang, W., Micklich, B., Mueller, P., O’Connor, T. P., and Purtschert, R.. Thu . "Setting a limit on anthropogenic sources of atmospheric 81Kr through Atom Trap Trace Analysis". United States. doi:10.1016/j.chemgeo.2017.02.007. https://www.osti.gov/servlets/purl/1356576.
@article{osti_1356576,
title = {Setting a limit on anthropogenic sources of atmospheric 81Kr through Atom Trap Trace Analysis},
author = {Zappala, J. C. and Bailey, K. and Jiang, W. and Micklich, B. and Mueller, P. and O’Connor, T. P. and Purtschert, R.},
abstractNote = {In this study, we place a 2.5% limit on the anthropogenic contribution to the modern abundance of 81Kr/Kr in the atmosphere at the 90% confidence level. Due to its simple production and transport in the terrestrial environment, 81Kr (half-life = 230,000 years) is an ideal tracer for old water and ice with mean residence times in the range of 105–106 years. In recent years, 81Kr-dating has been made available to the earth science community thanks to the development of Atom Trap Trace Analysis (ATTA), a laser-based atom counting technique. Further upgrades and improvements to the ATTA technique now allow us to demonstrate 81Kr/Kr measurements with relative uncertainties of 1% and place this new limit on anthropogenic 81Kr. As a result of this limit, we have removed a potential systematic constraint for 81Kr-dating.},
doi = {10.1016/j.chemgeo.2017.02.007},
journal = {Chemical Geology},
number = C,
volume = 453,
place = {United States},
year = {Thu Feb 09 00:00:00 EST 2017},
month = {Thu Feb 09 00:00:00 EST 2017}
}

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