Heat flux in a nonMaxwellian plasma
Abstract
A hybrid numerical scheme is applied to solve the Landau equation for the electron distribution function over all velocity space. At low velocities the distribution is approximated by using the SpitzerHärm method [Phys. Rev. 89, 977 (1953)], while at high velocities it is described by the highvelocity form of the Landau equation. The two parts of the distribution function are then matched at a suitably chosen value of electron speed. The distribution function is determined for a thermal structure typical of an active region of the solar atmosphere or flaring solar coronal loop. The heat flux is then calculated from the distribution function and is compared with the classical Fourier law of Spitzer and Härm and with the models of Campbell [Phys. Rev. A 30, 365 (1984)] and Luciani et al. [Phys. Fluids 28, 835 (1985); Phys. Rev. Lett. 51, 1664 (1983)].
 Publication:

Physical Review A
 Pub Date:
 July 1989
 DOI:
 10.1103/PhysRevA.40.981
 Bibcode:
 1989PhRvA..40..981L
 Keywords:

 Coronal Loops;
 Heat Flux;
 Landau Factor;
 Solar Wind;
 Distribution Functions;
 Electron Distribution;
 Particle Collisions;
 Solar Atmosphere;
 Solar Flares;
 Solar Physics;
 51.10.+y;
 96.60.Na;
 96.60.Pb;
 Kinetic and transport theory of gases;
 Chromosphere