Nonlinear interaction of intense laser pulses and an inhomogeneous electron-positron-ion plasma

被引：22
|
作者：
Cheng, Li-Hong [1 ]
Tang, Rong-An [1 ]
Zhang, Ai-Xia [1 ]
Xue, Ju-Kui [1 ]
机构：
[1] Northwest Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Peoples R China
来源：
PHYSICAL REVIEW E | 2013年 / 87卷 / 02期
基金：
中国国家自然科学基金;
关键词：
PAIR PRODUCTION; DRIVEN;
D O I：
10.1103/PhysRevE.87.025101
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The nonlinear interaction of an ultraintense short laser beam and an inhomogeneous electron-positron-ion (EPI) plasma is investigated. It is found that the presence of positrons and inhomogeneity results in strong modulational and filamentational instabilities, which induce strong nonlinear interactions between the laser beam and the inhomogeneous EPI plasma. Light beam focusing, filamentation, trapping, and nonlinear interaction between the trapped light spots and the inhomogeneous plasma are observed. Interestingly, we find that the inhomogeneity of the plasma can not only boost a mechanism for light beam self-focusing and filamentation but also provide an effective way to localize and trap the beam in the region one wanted. DOI: 10.1103/PhysRevE.87.025101
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页数：5
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