Solar and meteoritic abundance of silicon

Details Solar and meteoritic abundance of silicon Solar and meteoritic abundance of silicon

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980gecoa..44.2145b&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 44, Dec. 1980, p. 2145-2149.

Computer Science

21

Abundance, Meteoritic Composition, Silicon, Solar Spectra, Calcium, Carbonaceous Chondrites, Enstatite, Line Spectra, Transition Probabilities

Scientific paper

The paper reassesses lifetime measurements of excited electronic states of neutral Si and analyzes experimental transition probabilities of Si I lines. The solar Si/Ca ratio matches the carbonaceous chondrite groups C1, C2, and Ornans but not the Vigarano group, and is different from ordinary and enstatite chondrites. A 25% downward revision of the Si abundance determined from the solar spectrum is indicated, and the solar Si/Ca atomic ratio of 15.5 coincides with the value in carbonaceous chondrites.

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