Nuclear evolution of solar-system matter

Details Nuclear evolution of solar-system matter Nuclear evolution of solar-system matter

Aug 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976geokh.....1125l&link_type=abstract

Geokhimiia, Aug. 1976, p. 1125-1134. In Russian.

Astronomy and Astrophysics

Astronomy

Abundance, Chemical Evolution, Cosmic Rays, Cosmology, High Energy Interactions, Nuclear Fusion, Solar System, Astronomical Models, Galactic Radiation, Isotopes, Meteoritic Composition, Planetary Evolution, Radiative Transfer, Solar Cosmic Rays, Stellar Evolution, Transmutation

Scientific paper

The main stages in the bombardment of solar-system matter by high-energy cosmic-ray particles are examined on the basis of isotopic abundances in meteorites. Quantitative calculations show that the most intense processes of nuclear and radiative-chemical transmutation occurred during the nucleosynthesis periods about 11 and 4.6 billion years ago. It is argued that many problems concerning the differentiation of elements in the protoplanetary nebula cannot be solved without first developing a model for the bombardment of protoplanetary matter by solar and galactic cosmic rays.

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