【摘要】 本文利用Mie散射理论,计算出单个球形粒子的消光效率因子Qext,分析它随半径r变化的特性。利用消光效率因子计算出Junge型气溶胶消光系数与波长的关系,并算出Deirmendjian型气溶胶的5种波长消光系数比值表(波长分别为355 nm、532 nm、683 nm、1064 nm、1560 nm),根据此表就可拟合出气溶胶的尺度谱。更多还原

【Abstract】 In this paper, we calculate the extinction efficiency factor Qext of single spherical particle by using Mie scattering theory, and analyse its characteristics with the increasing of radius r. The relationship between extinction coefficient and laser wavelength is calculated for Junge model. For Deimendjian model the ratios table of 5 lidar wavelengths extinction coefficients is calculated, and the size distribution can be fit according to the table.更多还原