Physics
Scientific paper
Apr 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980georl...7..271k&link_type=abstract
Geophysical Research Letters, vol. 7, Apr. 1980, p. 271-274.
Physics
3
Abundance, Iron Meteorites, Meteoritic Composition, Silver Isotopes, Atom Concentration, Meteorites, Iron Meteorites, Pinon Meteorite, Santa Clara Meteorite, Silver, Isotopic Anomalies, Composition, Concentrations, Procedure, Palladium, Techniques, Enrichment, Origin, Isotopic Ratios, Metals, Samples, Meteorite, Data, Mass Spectrometry, Irradiation, Fission, Nucleosynthesis, Abundance
Scientific paper
The isotopic composition and concentration of Ag and the concentration of Pd have been determined in the Santa Clara and Pinon iron meteorites. It is shown that these meteorites contain isotopically anomalous Ag with an excess of Ag-107 relative to normal Ag, confirming earlier findings. Using an improved procedure for cleaning the sample surface from terrestrial Ag, a new concentration of 1.4 x 10 to the 11th atoms of Ag-109/g meteorite is established which is an order of magnitude below the levels found earlier. As a result ratios of Ag-107/Ag-109 were found which are enriched in Ag-107 by 60 percent to 160 percent. The existence of an excess Ag-107 in these two meteorites, which have high Pd-108/Ag-109 ratios of about 7 x 10 to the 4th is established.
Kaiser Tomas
Kelly William R.
Wasserburg Gerald J.
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