Journal
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
Volume 109, Issue 8, Pages 1527-1535Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jqsrt.2008.01.003
Keywords
light scattering; non-spherical particles; extinction; polarization
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We calculate the wavelength dependence of the ratio of the linear polarization degree to extinction (polarizing efficiency) P(lambda)/A(lambda) from the ultraviolet to near-infrared. The prolate and oblate particles with aspect ratios from a/b = 1.1 up to 10 are assumed to be rotating and partially aligned with the mechanism of paramagnetic relaxation (Davis-Greenstein). Size/ shape/orientation effects are analyzed. It is found that the wavelength dependence of P(lambda)/A(lambda) is mainly determined by the particle composition and size whereas the values of P(lambda)/A(lambda) depend on the particle shape, degree and direction of alignment. (C) 2008 Elsevier Ltd. All rights reserved.
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