The photochemistry and dynamics of a dusty cometary atmosphere

Details The photochemistry and dynamics of a dusty cometary atmosphere The photochemistry and dynamics of a dusty cometary atmosphere

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982m%26p....27...27m&link_type=abstract

Moon and the Planets, vol. 27, Aug. 1982, p. 27-46.

Computer Science

18

Atmospheric Chemistry, Atmospheric Models, Cometary Atmospheres, Interplanetary Dust, Photochemical Reactions, Radiative Transfer, Atmospheric Attenuation, Atmospheric Scattering, Comet Nuclei, Differential Equations, Electron Density (Concentration), Solar Radiation

Scientific paper

The solving of a simultaneous set of differential equations representing conservation of number density, momentum, and energy together with solar radiation transfer in the streams which result in photolytic processes and the heating of the nucleus yields a self-consistent solution of the dynamical and thermal structure of an H2O-dominated two-phase dusty gas cometary atmosphere. Two models are considered for the transfer of solar radiation through the circumnuclear dust halo. The first considers only the direct extinction by the dust, and in the second the diffuse radiation field due to multiple scattering by the dust halo, which compensates for radiation removed by direct absorption when the optical depth is near unity, is approximated by neglecting the attenuation of radiation given off by the dust. It is shown that while dust attenuation has a strong effect on the H2O production rate, it also increases the electron density in the inner coma over the unattenuated case.

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