Xenon from the Angra dos Reis meteorite

Details Xenon from the Angra dos Reis meteorite Xenon from the Angra dos Reis meteorite

Feb 1970

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970gecoa..34..185h&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 34, Issue 2, pp.185-191

Computer Science

11

Scientific paper

Xenon released in stepwise heating of the Angra dos Reis stone is found to be largely cosmogenic (from cosmic ray spallation reactions) and fissiogenic (presumably from the spontaneous fission of 82 million year Pu 244 ). This meteorite contains the largest proportion of these two components observed to date with some temperature fractions containing nearly pure spallation and fission-produced xenon. Unlike spallation xenon observed in the eucrites which results chiefly from barium, Angra dos Reis xenon appears to have significant contributions from spallation reactions on rare earth targets. A previous report that Angra dos Reis contains fission xenon of a new type is not substantiated.

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