Nucleation and growth of dust grains

Details Nucleation and growth of dust grains Nucleation and growth of dust grains

Nov 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974apj...193..579s&link_type=abstract

Astrophysical Journal, vol. 193, Nov. 1, 1974, pt. 1, p. 579-584.

Astronomy and Astrophysics

Astrophysics

118

Cosmic Dust, Crystal Growth, Nucleation, Stellar Atmospheres, Thermochemistry, Atmospheric Composition, Condensing, Convective Flow, Ionic Reactions, Phase Diagrams, Stellar Temperature

Scientific paper

Classical nucleation theory must be modified for the condensation of small, solid dust grains. Ion nucleation is unimportant, and exchange reactions with gas molecules are required. For carbon-rich stellar atmospheres, hydrocarbons act as intermediaries for converting acetylene gas into carbon particles. For oxygen-rich atmospheres, magnesium silicate grains form by surface nucleation. Sputtering and coalescence of grains is discussed.

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