Zhai Peng-Wang, Hu Yongxiang, Trepte Charles R, Winker David M, Josset Damien B, Lucker Patricia L, Kattawar George W
SSAI, MS 475 NASA Langley Research Center, Hampton, VA 23681-2199, USA.
Opt Express. 2013 Jul 29;21(15):17625-38. doi: 10.1364/OE.21.017625.
A realistic nonspherical model for Emiliania huxleyi (EHUX) is built, based on electron micrographs of coccolithophore cells. The Inherent Optical Properties (IOP) of the EHUX are then calculated numerically by using the discrete dipole approximation. The coccolithophore model includes a near-spherical core with the refractive index of 1.04 + m(i)j, and a carbonate shell formed by smaller coccoliths with refractive index of 1.2 + m(i)j, where m(i) = 0 or 0.01 and j(2) = -1. The reported IOP are the Mueller scattering matrix, backscattering probability, and depolarization ratio. Our calculation shows that the Mueller matrices of coccolithophores show different angular dependence from those of coccoliths.
基于颗石藻细胞的电子显微照片，构建了一种逼真的赫氏颗石藻（EHUX）非球形模型。然后，通过使用离散偶极近似法对赫氏颗石藻的固有光学特性（IOP）进行了数值计算。颗石藻模型包括一个折射率为1.04 + m(i)j的近球形核心，以及一个由折射率为1.2 + m(i)j的较小颗石组成的碳酸盐壳，其中m(i) = 0或0.01且j(2) = -1。所报告的固有光学特性包括穆勒散射矩阵、后向散射概率和去极化率。我们的计算表明，颗石藻的穆勒矩阵显示出与颗石不同的角度依赖性。
