ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The reported abundances of the argon isotopes in the terrestrial atmosphere4 at present are 40Ar, 99.600%; 38Ar, 0.063%; and 36Ar, 0.337%, giving an atmospheric 40Ar/36Ar ratio of 295.5. This anomalous situation is clearly related to the production of radiogenic 40Ar derived from the natural decay ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/250130a0
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