Stabilitätsuntersuchungen für das Elektron-Loch-Plasma
An explicit linear differential equation for the displacement of the electrons caused by a disturbation of the stationary state is obtained using a general MHD-description of the electron-hole plasma considering impurities, degeneration, induction of an electric field, generation and recombination of carriers. The application of this equation to helicon-instabilities leads to the known results.