Kinetic equations for a nonuniform plasma in strong fields and resulting particle transport
Abstract
From the BBGKY equations for a multicomponent plasma a derivation of generalized kinetic equations valid for nonuniform, neutral as well as nonneutral plasmas in strong electric and magnetic fields is made. Explicit effects of particle gyration and nonuniformities on the collisional scale are included in the collision terms. For each particle species the collision terms describing interaction between the same or other particle species consist of two parts. The first part is a generalization of the corresponding classical term, to which it reduces when fields and nonuniformities are negligible on the collisional scales. The second part is nonvanishing when nonuniformities are taken account of on the collisional scale. For the case of a neutral plasma, particle transport transverse to the magnetic field and along the density gradient is found. The result shows an increase of particle transport as compared with the classical formula when the Larmor radii are smaller than the Debye length. The underlying mechanism for this increase is pointed out.
 Publication:

Journal of Plasma Physics
 Pub Date:
 April 1990
 DOI:
 10.1017/S0022377800014744
 Bibcode:
 1990JPlPh..43..189O
 Keywords:

 Kinetic Equations;
 Nonuniform Plasmas;
 Particle Collisions;
 Particle Motion;
 PlasmaElectromagnetic Interaction;
 Debye Length;
 Electric Fields;
 Larmor Radius;
 Magnetic Fields;
 Particle Density (Concentration);
 Plasma Physics