Heat flux in a non-Maxwellian plasma

Details Heat flux in a non-Maxwellian plasma Heat flux in a non-Maxwellian plasma

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phrva..40..981l&link_type=abstract

Physical Review A - General Physics, 3rd Series (ISSN 0556-2791), vol. 40, July 15, 1989, p. 981-986. Research supported by SERC

Physics

General Physics

20

Coronal Loops, Heat Flux, Landau Factor, Solar Wind, Distribution Functions, Electron Distribution, Particle Collisions, Solar Atmosphere, Solar Flares

Scientific paper

A hybrid numerical scheme is applied to solve the Landau equation for the electron distribution function over all velocity space. Evidence is presented for the first time of the degree and character of the failure of the classical Spitzer-Haerm heat flux approximation in a realistic solar coronal loop structure. In the loop model used, the failure is so severe at some points that the role of the heat flux in the plasma's energy balance is completely misinterpreted. In the lower corona the Spitzer-Haerm approximation predicts that the heat flux should act as an energy source, whereas the more accurate distribution functions calculated here show this to be an energy sink.

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