Physics
Scientific paper
Oct 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998phrvl..81.3583n&link_type=abstract
Physical Review Letters, Volume 81, Issue 17, October 26, 1998, pp.3583-3586
Physics
36
Scientific paper
Twenty six individual circumstellar SiC grains extracted from the Murchison meteorite were analyzed for their strontium isotopic compositions by resonant ionization mass spectrometry. Large abundance deficits were found for the p-process isotope 84Sr. The measured grains had 87Sr/86Sr ratios indistinguishable from the primordial solar value, but several grains differed in their 88Sr/86Sr ratios as a consequence of the branch point at 85Kr. The Sr isotopic data are consistent with s-process nucleosynthesis at moderate neutron densities.
Amari Sachiko
Clayton Robert N.
Davis Aileen M.
Lewis Reed S.
Nicolussi Guenther K.
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