Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ap%26ss..79...11u&link_type=abstract
Astrophysics and Space Science, vol. 79, no. 1, Sept. 1981, p. 11-24.
Astronomy and Astrophysics
Astrophysics
1
Abundance, Chapman-Enskog Theory, Cosmic Plasma, Helium Plasma, Hydrogen Plasma, Transport Properties, Acoustic Propagation, Electron Energy, Electron Transfer, Hydrodynamic Equations, Ion Temperature, Kinetic Theory, Magnetic Flux, Nonuniform Plasmas, Plasma Oscillations, Temperature Dependence, Transport Theory
Scientific paper
Magnetohydrodynamic equations are derived for a fully ionized hydrogen-helium plasma under astrophysical conditions in order to investigate transport phenomena and their role in producing abundance anomalies in astrophysical plasmas. The transport equations for a fully ionized two-component plasma with unequal electron and ion temperatures are obtained by the modified Chapman-Enskog method, and the electron and ion distribution functions are found. Electron and ion transport coefficients are then determined as functions of electron and ion temperatures and densities and magnetic field strength. It is shown that the propagation of a sound wave in an initially homogeneous plasma may lead to abundance anomalies under astrophysical conditions, which may be important in both stellar and interstellar plasmas.
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