A distribution function for a gas under conditions of escape flow

Details A distribution function for a gas under conditions of escape flow A distribution function for a gas under conditions of escape flow

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ge%26ae..23..683p&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 23, July-Aug. 1983, p. 683-685. In Russian.

Physics

Boltzmann Transport Equation, Gas Density, Outgassing, Planetary Atmospheres, Distribution Functions, Hydrogen, Subcritical Flow

Scientific paper

In the problem regarding dissipation of a gas from the planetary atmosphere, the loss of fast particles by the atmosphere makes the distribution function of the dissipating gas deviate from the Maxwellian function, resulting in decreased escape flow. An approximate method for determining the distribution function is proposed in which the smallness of the deviation of the distribution function from the equilibrium function is not assumed a priori. The approach proposed here uses the model Boltzmann equation in the range of velocities that exceed the critical velocity. The effect of escape flow on the distribution function of the dissipating gas is also examined for subcritical velocities.

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