Kirmaci I, Ward G
Appl Opt. 1979 Oct 1;18(19):3328-31. doi: 10.1364/AO.18.003328.
A digital polar nephalometer has been constructed to measure the intensity and polarization of light pulses scattered at 94 angles from 9 degrees to 176 degrees from monodisperse aerosol particles of controlled shape. The dye laser gave 20-kW, 4-nsec pulses at 0.627 microm. Data from polystyrene latex spheres agrees with Mie theory within about 10%. Data for spheroidal and quasi-cubical particles are shown. It is found that the backscatter from nonspherical particles of size parameter approximately 10 differs significantly from that for the best-fit sphere, so that a tumbled irregular particle is not equivalent to a sphere.
已构建了一台数字式偏振测云仪，用于测量从9度到176度的94个角度上，由形状可控的单分散气溶胶颗粒散射的光脉冲的强度和偏振。染料激光器在0.627微米波长处产生20千瓦、4纳秒的脉冲。来自聚苯乙烯胶乳球的数据与米氏理论的符合程度在约10%以内。给出了椭球体和准立方体颗粒的数据。研究发现，尺寸参数约为10的非球形颗粒的后向散射与最佳拟合球体的后向散射有显著差异，因此翻滚的不规则颗粒不等同于球体。
