Generation of a wakefield during gas ionization

被引：26

作者：

Andreev, NE ^{[1
]}

Veisman, ME ^{[1
]}

Cadjan, MG ^{[1
]}

Chegotov, MV ^{[1
]}

机构：

[1] Russian Acad Sci, Inst High Energy Dens, Associated Inst High Temp, Moscow 127412, Russia

来源：

PLASMA PHYSICS REPORTS | 2000年 / 26卷 / 11期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/1.1323559

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：

One-dimensional equations are derived that describe the hydrodynamic and electrodynamic properties of a plasma created through gas ionization by a short intense laser pulse. Different approaches (in particular, the particle-in-cell method) are used to show that, with ionization processes included, the excitation of a wakefield by an intense laser pulse can be described by the method of slowly varying amplitudes. It is shown that ionization processes enhance the wakefield excited by a moderate-intensity laser by about 10% in the case of a linearly polarized laser and by about 50% in the case of a circularly polarized laser. Ionization processes in light gases irradiated with high-intensity laser pulses have essentially no effect on the wakefield during the resonant excitation of a plasma wave by the ponderomotive force and play a governing role far from the resonance. (C) 2000 MAIK "Nauka/Interperiodica".

引用

页码：947 / 959

页数：13