摘要Mie散射是目前应用广泛的粒子散射的最常用最基础的算法，在处理波长量级粒子散射的问题上有其他理论无可比拟的精度。毋庸置疑，用Mie散射理论来计算吸收性介质中颗粒散射特性是非常简单明了的。可应用Mie散射得出颗粒散射很多规律性的东西。例如，颗粒散射的各项系数随颗粒的尺度参数变化的规律；更换不同的基体介质会对颗粒的散射造成何种影响等等。采用FORTRAN程序模拟实验的方法对颗粒散射特性进行验证，以便确定颗粒的大小及介质的材料等地颗粒散射的影响。66224

毕业论文关键字  颗粒；光散射；MIE理论；FORTRAN

毕业设计说明书（论文）外文摘要

Title   Light scattering form particles in absorbing media.                     

Abstract Mie scattering is the most basic and conmmonly used algorithms for light

scattering .There are unparalleled accuracy in dealing with the order of the wavelength of the particle scattering problem used Mie scattering that the other theories donot have. Needless to say, with the Mie scattering theory to calculate the scattering properties of particulate absorbent medium is very straightforward.We can apply Mie scattering to scattering particles research to obtained a lot of regularities.For example, the particle scattering coefficient increases as the particle scale parameter changes in the law; changing different substrate particle scattering medium be what impact and so on.FORTRAN program simulation is using to particle scattering method for authentication, in order to determine the particle size and the dielectric material of the scattering particles, etc.

Keywords  particle; light scattering; Mie scattering theories; FORTRAN program

目录

1 绪论 5

1.1 课题背景 5

1.2课题研究意义 5

1.3 研究内容和方法 6

2 颗粒的散射特性分析 7

2.1 颗粒散射的分类 7

2.1.1 按颗粒的大小分类 7

2.1.2 按颗粒的个数分类 8

2.1.3 按基体介质的不同分类 8

2.2 颗粒散射的基础理论 8

2.2.1 光散射的光学理论 8

2.2.2 光散射现象的描述 9

2.2.3 Mie散射理论 10

2.3 球形颗粒Mie散射特性分析 11

2.3.1散射系数和消光系数 11

2.3.2 散射相位函数 12

2.3.3 散射强度函数 13

2.3.4  角散射截面 14

2.4 吸收性基体介质中颗粒散射特性分析 15

2.4.1 散射能量 16

2.4.2 吸收能量 16

2.4.3 消光 17

2.4 .4入射强度 17

3吸收性基体介质中颗粒的Mie散射特性的计算