Modifications of grains by particle bombardment in the early solar system

Details Modifications of grains by particle bombardment in the early solar system Modifications of grains by particle bombardment in the early solar system

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icar...61...48s&link_type=abstract

(Conference on Protostars and Planets II, Tucson, AZ, Jan. 4-7, 1984) Icarus (ISSN 0019-1035), vol. 61, Jan. 1985, p. 48-56. Res

Computer Science

19

Grains, Interstellar Matter, Ion Irradiation, Solar System, Stellar Evolution, Erosion, Ice, Organic Materials, Solar Flares, T Tauri Stars, Solar System, Sun, Flux, Ions, Experiments, Particles, Erosion, Ice, Grains, Evolution, Molecules, Phases, Synthesis, Organic Material, Condensation, Substrate, Chemistry

Scientific paper

Much observational and theoretical evidence supports the idea that the young Sun passed through a high-activity or T Tau phase. Among the various phenomena of activity a high flux of energetic (≡MeV) protons is expected. Some solid-state effects induced by ion fluence on solid surfaces are discussed on the basis of recent experimental results. In particular it is shown that erosion by particles is a very important destruction mechanism for ice grains in a large range of grain dimensions and distances from the Sun. This should significantly contribute to sweep out material from the solar system in its early evolutive stage. The release of new molecules in the gas phase and the synthesis of new organic materials from simple gases condensed on solid substrates are discussed. The laboratory infrared features of the new polymer-like materials are compared with spectra observed in organic compounds extracted from some meteorites.

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