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- W2034843564 abstract "The85Kr activity of well No. 9 is (2.1 ± 0.3) mBq/cm3 STP ofKr or ≈0.3% of the modern atmospheric activity indicating that no young water component is present in this groundwater and that no contamination occurred in extracting a Kr gas sample for81Kr analysis. The81Kr concentration was measured by laser resonance ionization spectroscopy to be 82 ± 18% of the modern atmospheric concentration. Only 5000 atoms of81Kr were used in the final analytical step which represent ≈7% of the initial number present in a water sample of 50 1. An upper limit of 140 ka is calculated for the age of the water from a simple81Kr decay model. Of key importance for the future use of a81Kr dating technique is the conclusion that subsurface production of81Kr appears to be unimportant." @default.
- W2034843564 created "2016-06-24" @default.
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- W2034843564 date "1991-01-01" @default.
- W2034843564 modified "2023-09-27" @default.
- W2034843564 title "81Kr and85Kr in groundwater, Milk River aquifer, Alberta, Canada" @default.
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- W2034843564 doi "https://doi.org/10.1016/0883-2927(91)90041-m" @default.
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