Lehmann, B. E.; Oeschger, H.; Loosli, H. H.; Hurst, G. S.; Allman, S. L.; Chen, C. H.; Kramer, S. D.; Payne, M. G.; Phillips, R. C.; Willis, R. D.; Thonnard, N. (1985). Counting 81Kr atoms for analysis of groundwater. Journal of Geophysical Research: Solid Earth, 90(B13), pp. 11547-11551. American Geophysical Union 10.1029/JB090iB13p11547
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A new analytical technique with sufficient sensitivity to determine 81Kr concentrations in groundwater is described. The method utilizes single-atom counting by laser resonance ionization spectroscopy (RIS) in combination with a small mass spectrometer to achieve the required selectivity and sensitivity. A first demonstration of the technique for groundwater analyses is presented in which about 1000 atoms of 81Kr were counted after the processing of gas extracted from only a few liters of water. The potential of the new method for groundwater dating in the range 50,000 to 1,000,000 years is discussed.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Physics Institute > Climate and Environmental Physics |
UniBE Contributor: |
Lehmann, Bernhard, Loosli, Heinz Hugo |
Subjects: |
500 Science > 530 Physics |
ISSN: |
2169-9356 |
Publisher: |
American Geophysical Union |
Language: |
English |
Submitter: |
BORIS Import 2 |
Date Deposited: |
30 Sep 2021 08:20 |
Last Modified: |
05 Dec 2022 15:52 |
Publisher DOI: |
10.1029/JB090iB13p11547 |
BORIS DOI: |
10.48350/158711 |
URI: |
https://boris.unibe.ch/id/eprint/158711 |
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