Excitation Of Plasma Oscillations By Shock Waves

Download or read book Excitation of Plasma Oscillations by Shock Waves written by Jurgen-Dietrich Welly and published by . This book was released on 1963 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: The velocity distribution of the electrons within a plasma shock front is investigated by methods of the kinetic theory arranged in a manner to account for heavy deviations from thermodynamic equilibrium. The distribution function exhibits two peaks and becomes unstable with respect to electron oscillations, the shock wave being sufficiently strong (Mach number greater than approximately 6.5). The second peak is formed by runaway electrons, i.e. those fast electrons which transgress the shock front from the hot region. The frequencies, wave numbers, growth rates, phase and group velocities of the excited oscillations, and the influence of the Ohmic damping are calculated approximatively. The results are applied to non-thermal radiofrequency radiation of the sun. (Author).