Tang Xiaoyun, Bi Lei, Lin Wushao, Liu Dong, Zhang Kejun, Li Weijun
Opt Express. 2019 Feb 18;27(4):A92-A116. doi: 10.1364/OE.27.000A92.
This paper reports on accurate calculations of backscattering properties of transported and soot-contaminated dust at triple wavelengths (0.355, 0.532, and 1.064 μm, respectively) by using the invariant imbedding T-matrix method. The changes of backscattering ratios from bare to soot-contaminated dust were systematically investigated by employing super-spheroidal dust and fractal soot models. The impacts of morphology change and soot absorptivity on backscattering ratios of soot-contaminated dust were clarified. In addition, it was found that adhesion has a large impact on the backscattering ratios. However, the results of non-contact soot-contaminated dust appear to be closer to observations than those of contact mixing.
本文报道了利用不变嵌入T矩阵方法对传输的且被烟尘污染的粉尘在三个波长（分别为0.355、0.532和1.064μm）下的后向散射特性进行的精确计算。通过采用超球形粉尘和分形烟尘模型，系统地研究了从裸尘到被烟尘污染的粉尘后向散射比的变化。阐明了形态变化和烟尘吸收率对被烟尘污染的粉尘后向散射比的影响。此外，发现附着力对后向散射比有很大影响。然而，非接触式被烟尘污染的粉尘的结果似乎比接触混合的结果更接近观测值。
