基质折射率对金属粒子散射特性的影响  

The influence of mediums' refractive index on scattering peculiarity of metal particles

作　　者：徐庆君[1] 韦德泉[1] 

机构地区：[1]枣庄学院物理与电子工程系,枣庄277160

出　　处：《原子与分子物理学报》2009年第6期1135-1138,共4页Journal of Atomic and Molecular Physics

基　　金：山东省科技攻关项目(2007GG30004005);山东省教育厅科技计划项目(J08WI05);2008年枣庄学院科技攻关项目

摘　　要：基于Mie散射理论,给出了金属粒子的散射、吸收和消光截面以及散射场强度的计算公式,并计算了三种金属(金、银、铜)粒子在不同折射率基质中的光学截面和散射强度.结果表明,在近红外区,这三种金属粒子的散射行为随基质折射率的变化规律相同,折射率越大散射特性越明显.Eased on the Mie scattering theory,we obtained that the calculation formula of Qxa ,Qabs ,Qext and scattering intensity F（θ） for metal particles. Also,we calculated the optic sections and scattering intensities of three kinds of metal （Au,Ag,Cu） particles in the different refractive index mediums. The results showed that in the near infrared region the change laws of scattering peculiarity for the three kinds of metal particles are the same,and the scattering peculiarity is more obvious with the increase in refractive index of mediums.

关 键 词：MIE散射 光学截面 散射强度 金属粒子 

分 类 号：O56[理学—原子与分子物理]