Isotopic enrichments of Xe132, Xe134, and Xe136 were found in a number of natural gases and are attributed to the spontaneous fission of U238. The ratio of spontaneous-fission xenon to atmospheric xenon and the ratio of spontaneous fission xenon to He are discussed in terms of a solubility model. It is shown that the isotopic enrichments can be explained in terms of the solubility model and a preferential release of He as compared to XegF by a factor ranging up to three. An estimate is made of the present flux of spontaneous-fission xenon into the atmosphere.
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Fluids in Subsurface Environments
Sourced from a 1964 symposium on The Geology of Fluids, this publication brings together an array of papers dealing with many aspects of the subject. Included are 18 papers covering basin-specific research as well as basic research on fluids in subsurface environments.