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Geochemical Journal
Geochemical Journal An open access journal for geochemistry
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Isotopic compositions of xenon and krypton in Belgian Congo pitchblende

N. G. Sumerlin, P. K. Kuroda
Geochemical Journal, Vol. 12, No. 4, P. 279-285, 1978

ABSTRACT

Isotopic compositions of xenon and krypton released from a sample of Belgian Congo pitchblende were measured mass-spectrometrically in stepwise heating experiments. Relative contributions from spontaneous fission of 238U, thermal neutron-induced fission of 235U and fast neutron-induced fission of 238U, to the production of fissiogenic xenon found in the ore were calculated to be 64.1, 18.8 and 17.1 percent, respectively.

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