Ai. Smolyakov et I. Khabibrakhmanov, NONLINEAR DIFFUSION OF THE MAGNETIC-FIELD IN WEAKLY IONIZED PLASMAS, Physical review letters, 81(22), 1998, pp. 4871-4874
Enhanced nonlinear penetration of the external periodic magnetic field
into a weakly ionized plasma is investigated. The penetration is enha
nced by the convection of the magnetic field due to the Lorentz force.
The nonlinearity leads to the wavelike propagation of the magnetic fi
eld or to the nonlinear diffusion similar to the diffusion in porous m
edium depending on plasma collisionality. It is shown that the periodi
c magnetic field experiences much slower decay inside the plasma compa
red to that of the standard skin effect. [S0031-9007(98)07748-5].