Transformation of the angular power spectrum of scattered radiation in a turbulent absorbing magnetoactive plasma

We consider the oblique incidence ofa small-amplitude plane electromagnetic wave on a layer of turbulent absorbing plasma in a uniform external magnetic field. The equations for the first two statistical moments ofthe angular power spectrum ofscattered radiation are derived in the geometrical-optics approximation. We show that two asymmetry factors of the problem, i.e., the oblique incidence and the influence ofthe anisotropic medium, compensate for each other along a certain direction and impede the appearance ofthe effect ofdisplacement ofthe power-spectrum maximum and the effect ofanomalous spectrum broadening. We find the condition at which such a case ofwave propagation is realized. The dependence ofthe angular-spectrum shape on the distance from the plasma-layer boundary is studied numerically without using the small-angle approximation. The calculations confirm the results obtained using the geometrical-optics approximation. © 2002 Plenum Publishing Corporation.