摘要
基于T矩阵理论及Mie散射理论,在10.6μm波段,利用朗伯-比尔定律分别对回转椭圆体和球形碳黑粒子组成烟幕的干扰特性进行了分析。分析表明:无论是球形还是非球形,都存在一个最佳粒径(1.5μm左右),使烟幕干扰效果最好;回转椭圆体组成烟幕的干扰效果优于等体积球形粒子组成烟幕的干扰效果,回转椭圆体非球形特征越明显时,干扰效果越好;在粒径不变时,随着烟幕浓度及烟幕厚度越来越大,烟幕干扰效果越来越好。
Based on the T matrix theory and Mie scattering theory,Lambert-Beer law was used,the interference characteristics of smoke screen which composed of spheroid and spherical particles of carbon black were analyzed respectively in 10.6 μm band.Analysis shows that： whether it is spherical or non-spherical,there is an optimum size（about 1.5 μm）,so that smoke screen interference effect was the best;the interference effects of smoke screen which composed of spheroid particles is better than spherical particles,the more obvious of non-spherical features of spheroid,the better of the interference effect;in particle size constant,with the thickness and concentration of smoke more and more,smoke screen interference effect was getting better and better.
出处
《红外技术》
CSCD
北大核心
2010年第8期483-486,共4页
Infrared Technology
