Rapid processing of 85Kr/Kr ratios using Atom Trap Trace Analysis

Zappala, J. C.; Bailey, K.; Mueller, P.; O'Connor, T. P.; Purtschert, R.

doi:10.1002/2016WR020082

Rapid processing of ⁸⁵Kr/Kr ratios using Atom Trap Trace Analysis

Journal Article · Sat Mar 11 00:00:00 EST 2017 · Water Resources Research

DOI:https://doi.org/10.1002/2016WR020082· OSTI ID:1356577

^[1]; Bailey, K. ^[2]; ^[2]; O'Connor, T. P. ^[2]; Purtschert, R. ^[3]

Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division; Univ. of Chicago, IL (United States). Department of Physics and Enrico Fermi Institute
Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division
University of Bern (Switzerland). Climate and Environmental Physics Division

In this paper, we report a methodology for measuring ⁸⁵Kr/Kr isotopic abundances using Atom Trap Trace Analysis (ATTA) that increases sample measurement throughput by over an order of magnitude to six samples per 24 h. The noble gas isotope ⁸⁵Kr (half-life = 10.7 years) is a useful tracer for young groundwater in the age range of 5–50 years. ATTA, an efficient and selective laser-based atom counting method, has recently been applied to ⁸⁵Kr/Kr isotopic abundance measurements, requiring 5–10 μL of krypton gas at STP extracted from 50 to 100 L of water. Previously, a single such measurement required 48 h. In conclusion, our new method demonstrates that we can measure ⁸⁵Kr/Kr ratios with 3–5% relative uncertainty every 4 h, on average, with the same sample requirements.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1356577

Journal Information:: Water Resources Research, Journal Name: Water Resources Research Journal Issue: 3 Vol. 53; ISSN 0043-1397

Publisher:: American Geophysical Union (AGU)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited By (1)

Atmospheric ⁸¹ Kr as an Integrator of Cosmic‐Ray Flux on the Hundred‐Thousand‐Year Time Scale Zappala, J. C.; Baggenstos, D.; Gerber, C. Geophysical Research Letters, Vol. 47, Issue 3 https://doi.org/10.1029/2019gl086381	journal	February 2020

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