Depolarization of X-ray laser radiation in plasmas due to various microscopic fluctuations

Two mechanisms of a depolarization of X-ray laser radiation in plasmas are studied. The first mechanism is produced by fluctuated magnetic microfield. Small areas (domains) of definited microfield amplitudes are working as elementary rotators of propagated radiation polarization plane. Passing a sequence of such domains, the radiation asquires a depolarized component. The second mechanism of depolarization is connected with different changes of the normal and tangential projections of the electric field vector of X-ray wave while the X-laser radiation passes the boundary between two media with different refractive indices N. Regions with different refractive indices exist due to the density fluctuations in plasmas (including microturbulence).