HG散射相函数中非对称因子研究

Study of asymmetric factor in HG scattering phase function

根据Mie理论,对均匀系中矿物单粒子的非对称因子进行了数值计算,并分析了非对称因子与粒子尺度因子以及光学常数的关系.结果表明:可见光照射矿物粒子时,非对称因子随尺度因子增大而增大;光学常数的变化对非对称因子的影响不大.利用高斯拟合算法,给出了反映HG散射相函数中非对称因子与尺度因子和光学常数关系的定量表达式.

Based on the Mie theory, the numerical calculation of the asymmetry factor of mineral mono-particle was carried out, and relationship among the asymmetric factor, size factor and optical constant was analyzed. The results show that the asymmetry factor increase with the increasing of the size factor when mineral particle is irradiated by visible light. The variety of the optical constant has little effect on the asymmetry factor. Moveover, by utilizing Gaussian fitting algorithm, a quantitative expression was given to reveal the relationship between the asymmetry factor in the Henyey-Greenstein（HG） scattering phase function with the size factor and optical constant of mineral particle.