摘要
用Ｔ矩阵方法计算了折射率虚部的范围在０．００１至０．１的几种椭球粒子随机取向时在几种等效尺度参数下的光散射与吸收特性，并与等效的球形粒子的光散射结果进行了比较。分析结果表明：椭球粒子的吸收特性与等效的球形粒子的吸收特性存在着差别，这种差别随粒子的形状、尺度和折射率而改变，考虑到目前气溶胶粒子复折射率虚部的测量精度，以等效的球体粒子处理非球形粒子的吸收不会带来显著的误差。
Numerical calculation was carried out on light scattering by randomly oriented spheroidal particles with the imaginary part of the refractive index in the range of 0.001 to 0.1 for several size parameters.The absorption properties were analyzed and compared with those of the equivalent spherical particles. Results show that there are differences between the absorption properties of the spheroidal and spherical particles, and the differences vary with the shape, the size and the refractive index of the particle. In consideration of the measurement accuracy of the aerosol absorption the treatment of the nonspherical particle scattering with equivalent spherical particle will not introduce obvious error.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
1998年第3期371-374,共4页
High Power Laser and Particle Beams
基金
国家863激光技术领域青年科学基金
