摘要
根据Brownian运动的统计特性和经典电磁场理论,详细地计算了胶体中动态光散射的自相关函数,并将所碍的若干结果应用到有外电场存在的情况中,讨论了有外电场和无外电场两种情况下相应的频谱密度的不同之处。指出所得结果可用于实验中并认为它可定量分析多分散系统。
Calculation is presented of the autocorrelation of scattered field by a monodis-perse systems in colloid following, statistical properties of Brownian movement and theory of Classical electromagnetics field. The results apply to the situation that the Brownian partieales are in an electric field. It is discution that the spectral density, difference bet-tween the two situations, and suggests that this result may also be employed for the ex-periments and for the quantative analysis of mixtures of charged macromolecules in col-loid.
关键词
动态光散射
微观机制
胶体
brownian movements
dynamic light sacttering: autocorrelation function
electrophoresis
