Computer Science
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993e%26psl.114..391h&link_type=abstract
Earth and Planetary Science Letters, Volume 114, Issue 2-3, p. 391-396.
Computer Science
4
Scientific paper
Isotopic studies of many elements from the uranium ore natural nuclear reactors at Oklo provide useful information on the migration of radioactive nuclides. The fissiogenic isotopic composition of Ba is particularly interesting, as it is an important indication in the search for fissiogenic Cs. In this report we detail the detection of remarkable isotopic deviations of Ba in the Oklo samples and estimate the geochemical behaviour of fissiogenic Cs from excess Ba isotopes. Six samples systematically collected from borehole SF84 (zone 10) at the Oklo uranium mine have been analyzed. Isotopic deviations of Ba indicate the existence of fissiogenic Cs and Ba. A good correlation between the elemental abundance of Cs and isotopic abundances of excess 135Ba and 137Ba suggests that fissiogenic 135Ba and 137Ba behaved as Cs rather than Ba.
Hidaka Hiroshi
Holliger Philippe
Masuda Akimasa
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