Effects of Higher-Order Relativistic Nonlinearity and Wakefield During a Moderately Intense Laser Pulse Propagation in a Plasma Channel

作     者：刘明萍 刘兵兵 刘三秋 张福阳 刘杰 

作者机构：College of Information EngineeringNanchang University Key Laboratory of Beam Technology and Materials Modification of the Ministry of EducationBeijing Normal University Department of PhysicsNanchang University Institute of Applied Physics and Computational Mathematics 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2013年第60卷第8期

页      面：222-226页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos.11047152,11147005,and 11178002 the Natural Science Foundation of Jiangxi Province under Grant Nos.2010GQW0048 and 20122BAB202003 

主　　题：higher-order relativistic nonlinearity laser wakefield plasma channel intense laser pulse 

摘      要：Using a variational approach,the propagation of a moderately intense laser pulse in a parabolic preformed plasma channel is *** effects of higher-order relativistic nonlinearity (HRN) and wakefield are *** effect of HRN serves as an additional defocusing mechanism and has the same order of magnitude in the spot size as that of the transverse wakefield (TWF).The effect of longitudinal wakefield is much larger than those of HRN and TWF for an intense laser pulse with the pulse length equaling the plasma *** catastrophic focusing of the laser spot size would be prevented in the present of HRN and then it varies with periodic focusing oscillations.