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

Journal Article · · Chemical Geology
 [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

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.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
AC02-06CH11357; DEAC02-06CH11357
OSTI ID:
1356576
Alternate ID(s):
OSTI ID: 1413359
Journal Information:
Chemical Geology, Vol. 453, Issue C; ISSN 0009-2541
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

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Cited By (1)