Abstract
IT was shown that during March–December 1959 (ref. 1) the specific activities of fission products from fall-out in precipitation increased with sampling height. Some evidence was also found for an increase in the ratio 89Sr/90Sr with sampling height, but this increase was not significant (P ∼ 90 per cent).
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References
Aarkrog, A., Nature, 188, 482 (1960).
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AARKROG, A. Variation in the Ratio of Strontium-89 to Strontium-90 in Precipitation Samples with Sampling Height. Nature 204, 771 (1964). https://doi.org/10.1038/204771a0
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DOI: https://doi.org/10.1038/204771a0
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