Physics
Scientific paper
May 1970
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970gecoa..34..593b&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 34, Issue 5, pp.593-610
Physics
2
Scientific paper
Analyses of noble gases from four natural gases reveal radiogenic He 4 and Ar 40 , excess Ne 21 and Ar 38 from -induced reactions and an excess of the -unshielded xenon isotopes with an abundance pattern unlike that from the spontaneous fission of U 238 . The pattern of excess Xe 129 , Xe 131 , Xe 132 , Xe 134 and Xe 136 in these gas samples is such that a mixture of this xenon with the primordial xenon in meteorites could produce the abundance pattern of atmospheric xenon for all isotopes heavier than Xe 128 . It is suggested that this strange "fission-yield" pattern is the result of a mechanism suggested earlier by : The addition of -shielded xenon isotopes to the atmosphere by the solar wind. By modifying 's hypothesis so that solar-wind xenon contains excess Xe 124 and Xe 126 in addition to Xe 128 and Xe 130 , the addition of this solar wind xenon to atmospheric and meteoritic xenon can account for the general isotopic anomaly pattern observed across meteoritic xenon, the very low fission yields of Xe 131 and Xe 132 reported in xenon-rich meteorites and the high fission yields of Xe 131 and Xe 132 which have been calculated for xenon in gas wells and in the earth's atmosphere.
Bennett Gloria Adame
Manuel Oliver K.
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