Electromagnetic scattering from a spherical polydispersion of coated spheres.
Electromagnetic scattering from a spherical polydispersion of coated spheres.
复制标题
来自涂层球体的球形多分散体的电磁散射。
作者：
G. Kattawar;Dan A. Hood
体积平均横截面的消光，散射，吸收，辐射压力沿着与相矩阵的元素被计算为一个球形的多分散体的水涂层的碳颗粒。使用的波长为4910 A。审议了两个案件。对于一个，我们保持水涂层的厚度在多分散体上恒定，而参数q = r（0）/r（芯半径与总半径的比率）是变化的。对于随后的情况下，我们保持q恒定的多分散体，而涂层的厚度变化。结果表明，干、湿气溶胶的偏振强度和偏振度都有很大的差异。也可能发生干涉现象，这表明气溶胶的平均折射率的分配可能会产生误导，并可能导致错误的结果。
The volume averaged cross sections for extinction, scattering, absorption, and radiation pressure along with the elements of the phase matrix were computed for a spherical polydispersion of water coated carbon particles. The wavelength used was 4910 A. Two cases were considered. For one we held the thickness of the water coating constant over the polydispersion, while the parameter q = r(0)/r, (the ratio of core radius to total radius) was varied. For the subsequent case we held q constant over the polydispersion, while the thickness of the coating varied. The results show that there are large differences in both the intensity and degree of polarization between dry and wet aerosols. Also interference phenomena can occur, which demonstrate that the assignment of an average refractive index to aerosols can be misleading and can lead to erroneous results.