STOCHASTIC FORCES ON ELECTRONS IN THE SOLAR-FLARE PLASMA

A Langevin equation for electrons in the plasma of a solar flare with electrostatic lower-hybrid-drift turbulence is developed from first pr inciples and in consistency with the kinetic theory in the polarizatio n approximation. The waves are assumed to be excited by small density gradients causing drift velocities below the thermal ion velocity. Fir st utilizable expressions for the space-time spectral density of the w ave energy are given, and estimates of the mean wave force on an elect ron as well as of the intensity of the stochastic wave force are made. It seems that almost electrostatic lower-hybrid-drift waves could con tribute to electron chaotization in solar flare plasmas.