Circular polarization of light scattered by asymmetrical particles

被引：15
|
作者：
Guirado, D.
Hovenier, J. W.
Moreno, F.
机构：
[1] CSIC, Inst Astrofis Andalucia, E-18008 Granada, Spain
[2] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands
来源：
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER | 2007年 / 106卷 / 1-3期
关键词：
circular polarization; asymmetrical particles; single scattering; comets;
D O I：
10.1016/j.jqsrt.2007.01.006
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present calculations of the degree of circular polarization of light singly scattered by some kinds of asymmetrical particles in random orientation as a function of the scattering angle, using the T-matrix method. To clarify the possible contribution of asymmetry of particles to circular polarization we considered aggregates of optically inactive homogeneous identical spheres. We analysed the effect of changing the size of the monomers and the refractive index. We also performed calculations for two different geometries. The values of the computed degree of circular polarization are generally in the range of the observed ones for light scattered by dust particles in comets P/Halley, C/1995 O1 (Hale-Bopp) and C/1999 S4 (LINEAR), in the interplanetary medium and in the interstellar medium of our galaxy. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：63 / 73
页数：11
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