Physics
Scientific paper
Nov 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985phfl...28.3341m&link_type=abstract
Physics of Fluids (ISSN 0031-9171), vol. 28, Nov. 1985, p. 3341-3348.
Physics
8
Diffusion Theory, Ionized Gases, Quantum Theory, Thermal Diffusion, Differential Equations, Hydrogen Plasma, Shielding, Solar Interior, Tensor Analysis
Scientific paper
The theory of thermal diffusion in ionized gases is reconsidered taking into account quantal effects and effects caused by dynamic shielding. Quantal effects arise because it is only in a small range of intermediate energies that the de Broglie wavelength is negligible relative to the effective collision diameter. Dynamic shielding effects are caused by the lack of instant response to particle motion by the charged particle sea surrounding them and are important at low temperatures and high electron densities. The errors incurred by the omission of these effects can usually be ignored in planetary ionospheres or in the solar corona, but are by no means negligible under conditions characteristic of the solar interior. Similar, but not identical, results were found for calculations of the binary diffusion coefficient.
Mason Edward A.
Monchick Louis
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