Electron Acceleration in Wakefield and Supra-Bubble Regimes by Ultraintense Laser with Asymmetric Pulse  

作　　者：BAKE Maimaitiaili 谢柏松 DULAT Sayipjamal AIMIDULA Aimierding 

机构地区：[1]Department of Physics,Xinjiang University [2]College of Nuclear Science and Technology,Beijing Normal University

出　　处：《Communications in Theoretical Physics》2011年第5期883-887,共5页理论物理通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China(NSFC)under Grant Nos.10875015 and 10834008

摘　　要：Electron acceleration in plasma driven by circular polarized ultraintense laser with asymmetric pulse axe investigated analytically and numerically in terms of oscillation-center Hamiltonian formalism. Studies include wakefield acceleration, which dominates in blow-out or bubble regime and snow-plow acceleration which dominates in supra-bubble regime. By a comparison with each other it is found that snow-plow acceleration has lower acceleration capability. In wakefield acceleration, there exists an obvious optimum pulse asymmetry or/and pulse lengths that leads to the high net energy gain while in snow-plow acceleration it is insensitive to the pulse lengths. Power and linear scaling laws for wakefield and snow-plow acceleration respetively are observed from the net energy gain depending on laser field amplitude. Moreover, there exists also an upper and lower limit on plasma density for an effective acceleration in both of regimes.

关 键 词：laser-plasma acceleration of electrons Hamiltonian mechanics 

分 类 号：TN24[电子电信—物理电子学] O53[理学—等离子体物理]