PROPAGATION OF ACCUMULATION AND DEPLETION WAVES UNDER THE INFLUENCE OF RANDOM CURRENT OSCILLATIONS

The propagation of Gunn layers (GL), i.e. accumulation and depletion w aves, under the influence of random current oscillations, which may be characterized as a white Gaussian noise, is considered. It is shown t hat the current oscillations significantly influence the distribution of the average electric field in the GL wave distorting appreciably th e shape of the GL wave, while the average velocity of GL is not change d due to the presence of current deviations. At a sufficiently long ti me, after the random oscillations have been ''turned on'', the average GL field is shown to obey the diffusion equation.