DYNAMICS OF PONDEROMOTIVE SELF-FOCUSING IN PLASMAS

被引：44

作者：

COHEN, BI

LASINSKI, BF

LANGDON, AB

CUMMINGS, JC

机构：

[1] Lawrence Livermore National Laboratory, University of California, Livermore

[2] Princeton University, Princeton

来源：

PHYSICS OF FLUIDS B-PLASMA PHYSICS | 1991年 / 3卷 / 03期

关键词：

D O I：

10.1063/1.859872

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 space-time evolution of nonlinear self-focusing of a coherent electromagnetic beam in a plasma is calculated. Parameters are considered for which the dominant nonlinearity is the ponderomotive force and the plasma response is hydrostatic. A simple nonlinear wave equation with a saturable, exponential nonlinearity is presented and solved in the paraxial limit. Nondimensional scaled variables are introduced, and both steady-state and time-dependent numerical solutions of the scaled equation are calculated in the limit of cylindrical symmetry. Self-focusing can be important both for high-power lasers in inertial-confinement-fusion applications and for heating of magnetically confined plasmas with intense, pulsed free-electron lasers.

引用

页码：766 / 775

页数：10

共 29 条

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