Other
Scientific paper
Jan 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979e%26psl..42....7c&link_type=abstract
Earth and Planetary Science Letters, vol. 42, no. 1, Jan. 1979, p. 7-12. Research supported by the Max-Planck-Gesellschaft zur
Other
10
Anomalies, Inclusions, Meteoritic Composition, Samarium Isotopes, Abundance, Evolution (Development), Fractionation, Solar Activity Effects
Scientific paper
The solar isotopic composition of Sm is decomposed into s, r, and p components. The anomaly pattern discovered by Lugmair et al. (1978) in EK1-04 Allende inclusion can be presented as a fractionation of the average s-pattern from the average r-pattern. This representation requires a fractionation of 0.029%/(amu) and either (1) a 0.42% deficiency of s relative to r and a 0.15% deficiency of p relative to r, or (2) a 0.42% excess of r relative to s and a 0.27% excess of p relative to s. The nature of this anomaly suggest a systematic physical fractionation of r, s, and p nuclei from each other in the initial condition leading to EK1-04. A neighboring supernova injection would not be expected to produce this anomaly.
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