Solar abundances of the elements

Details Solar abundances of the elements Solar abundances of the elements

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983metic..18..209m&link_type=abstract

Meteoritics (ISSN 0026-1114), vol. 18, Sept. 30, 1983, p. 209-222.

Computer Science

18

Abundance, Isotopic Enrichment, Rare Gases, Solar Wind, Chemical Elements, Fractionation, Isotope Separation, Light Elements, Planetary Composition

Scientific paper

The isotopic compositions of noble gases in the solar wind show high enrichments of light isotopes. When corrected for mass fractionation all five noble gases there can be resolved in terms of the two primitive noble gas components that have been identified in planetary solids. Reasons are presented for assigning the fractionation to a solar process that selectively enriches lighter nuclei at the surface of the sun. When abundances of the elements at the sun's surface are corrected for this fractionation, it is shown that atomic abundances for major elements in the bulk sun are (in decreasing order): Fe, Ni, O, Si, S and Mg. Solar elements at about the 1 percent atomic abundance level include He, C, Ne, Ca and Cr. These results suggest that fusion of hydrogen is probably not the sun's primary energy source.

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