Vol. 19, issue 04, article # 2

pdf Shefer O. V. Energy and polarization characteristics of optical radiation scattered forward by a plane crystal. // Atmospheric and oceanic optics. 2006. V. 19. No. 04. P. 244-248.
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The results are presented of numerical studies of characteristics (extinction cross section, extinction efficiency factor, polarization degree, elements of the scattering phase matrix) of optical radiation scattered forward by an ice plate. It is shown that in the case of a semitransparent oriented plate, different combinations of the quantities determining particle size, its spatial orientation, and refractive index cause variations of the extinction efficiency factor between 0 and 4. Practically monotonic dependence of the extinction in the IR range (at least within the wavelength range of several microns) and fast oscillating one in the visible range have been obtained. It is shown that at variations of microphysical and optical parameters of plates, the highest rate of the change of polarization characteristics of the forward scattered radiation is observed at the angle of a crystal tilt with respect to the sensing direction exceeding 30°.