Computer Science
Scientific paper
Dec 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989e%26psl..96..235t&link_type=abstract
Earth and Planetary Science Letters (ISSN 0012-821X), vol. 96, no. 1-2, Dec. 1989, p. 235-246. Research supported by ISRO.
Computer Science
3
Iron Meteorites, Mercury Isotopes, Neutron Activation Analysis, Radiochemistry, Abundance, Chemical Composition
Scientific paper
The insoluble materials obtained on dissolution of iron meteorites in 2 M H2SO4 have been analyzed by radiochemical neutron activation to measure the isotopic ratio Hg-196/Hg-202 of Hg released at different temperatures. In many cases this ratio is found to be anomalous; its extreme values, relative to the reagent Hg, being: less than 0.003 (2sigma limit) and 1.26 + or - 0.05. Often, in the same residue, both positive and negative deviations are found at different temperatures. The anomalous, normal, and isotopically diluted Hg distillates have been re-irradiated to eliminate the influence of neutron self-shielding and interfering reactions from matrix elements. The isotopic anomaly persists in the distillates, proving that any artifacts during irradiation are essentially absent.
Goel Parmatma S.
Thakur Alakh N.
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