研究反常趋肤效应的傅里叶变换方法  

Fourier Transformation of Investigating Anomalous Skin Effect

作　　者：马国彬[1] 谭维翰[2] 王占山[3] 

机构地区：[1]中国科学院上海光学精密机械研究所 [2]上海大学物理系 [3]中国科学院长春光学精密机械研究所

出　　处：《光学精密工程》1998年第2期18-24,共7页Optics and Precision Engineering

基　　金：国家应用光学重点实验室资助课题

摘　　要：借助等离子体色散函数，在快速傅里叶变换的基础上，将等离子体中激光场的幅度用电导显含地表示，进而用一个方程描述高强度超短脉冲激光与稠密等离子体相互作用中的正常及反常趋肤效应。与文献相比，计算量大大减小，且物理意义较为明晰。对相同的参数，计算结果与文献一致。对文献未曾研究过的参数区域，计算发现，即使对不随速度变化的碰撞频率，由于反常趋肤效应，激光场的穿透深度也明显增大。The fourier transformation is used to investigate the skin effects in the interaction of short laser pulses with dense plasmas by plasma dispersion function.With this method,the field amplitude in the plasma can be represented explicitly in terms of electric conductivity.The normal and anormalous skin effects can be described through one equation.The calculation results are in agreement with references for equivalent parameters.The calculation amount is greatly descreas and the physical meaning is very elear.The field amplitude is considerably enhanced due to the anomalous skin effect,even for constant collision frequency,for deeper positions inside a target,which have not been studied yet.

关 键 词：反常趋肤效应 傅里叶变换 激光 等离子体 

分 类 号：TN241[电子电信—物理电子学]