The destruction and growth of dust grains in interstellar space. I - Destruction by sputtering. II - Destruction by grain surface reactions, grain-grain collisions and photodesorption. III - Surface recombination, heavy element depletion and mantle growth

Details The destruction and growth of dust grains in interstellar space. I - Destruction by sputtering. II - Destruction by grain surface reactions, grain-grain collisions and photodesorption. III - Surface recombination, heavy element depletion and mantle growth The destruction and growth of dust grains in interstellar space. I - Destruction by sputtering. II - Destruction by grain surface reactions, grain-grain collisions and photodesorption. III - Surface recombination, heavy element depletion and mantle growth

May 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978mnras.183..367b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 183, May 1978, p. 367-395, 397-415, 417-434. Research supported by the M

Astronomy and Astrophysics

Astronomy

98

Cosmic Dust, Ice Nuclei, Interstellar Radiation, Interstellar Space, Particle Interactions, Sputtering, Desorption, Graphite, Interstellar Chemistry, Interstellar Matter, Photochemical Reactions, Surface Reactions

Scientific paper

The role of sputtering in the destruction of dust grains in interstellar space is investigated. For sputtering by collisions with low-energy particles (a few eV), it is shown that no existing theories are adequate for predicting sputtering yields and that empirical yields derived from experiment must be used. Sputtering yields are derived for bombarding particles in the keV and MeV range by using the sputtering theory of Pease. The importance of thermal spikes is investigated. The interaction of cosmic rays with ice grains is also considered. Also considered are destruction by grain surface reactions, grain-grain collisions, and photodesorption, and surface recombination, heavy element depletion, and mantle growth.

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