摘要
对复合镀金属微球的红外消光特性进行了数值计算,结果表明,当壳层厚度小于某一值时,对数正态分布下的双层壳复合微球,在最佳中径附近范围内时的质量消光系数大于单层壳微球,也大于由单层壳微球与双层壳复合微球的外层壳材料混合的微球;随着内壳h或外壳H的增加,上述粒径范围变窄,而随着波长λ的增加该范围变宽。微球的最佳中径等于波长的三分之一左右。
The mass attenuation coefficient of the composite spheres of Cu-coated spheres covered with graphite is compared with that of the mixture of the Cu-coated spheres and graphite particles in infrared. The results show that the mass attenuation coefficient of the former is bigger than that of the latter in a range. It is also bigger than that of the Cu-coated spheres or graphite spheres. The optimal median diameter of the sphere is found to be about one third of the wave length to be interfered in infrared waveband.
出处
《红外技术》
CSCD
北大核心
2005年第2期179-182,共4页
Infrared Technology
