WAVE BREAKING AND ABSORPTION EFFICIENCY FOR SHORT PULSE P-POLARIZED LASER-LIGHT IN A VERY STEEP DENSITY GRADIENT

被引：18

作者：

KATO, S ^{[1
]}

BHATTACHARYYA, B ^{[1
]}

NISHIGUCHI, A ^{[1
]}

MIMA, K ^{[1
]}

机构：

[1] UNIV N BENGAL,RAJA RAMMOHANPUR 734430,W BENGAL,INDIA

来源：

PHYSICS OF FLUIDS B-PLASMA PHYSICS | 1993年 / 5卷 / 02期

关键词：

D O I：

10.1063/1.860542

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 ultrashort-pulse laser with a solid target is investigated by using a newly developed particle simulation code, which enables the analysis of laser-plasma interaction in the very steep density gradient in which the laser light penetrates into an overdense plasma. For an ultrashort laser pulse, the plasma density scale length L(d) satisfies L(d) < r0 for an electron excursion length r0. Laser absorption and electron acceleration processes are proposed for the above situation. It is found that the wave breaking is the main mechanism of the electron acceleration and laser absorption, as is discussed in Brunel's paper [Phys. Rev. Lett. 59, 52 (1987)].

引用

页码：564 / 570

页数：7

共 6 条

[1] PLASMA MECHANISM FOR ULTRAVIOLET HARMONIC RADIATION DUE TO INTENSE CO2 LIGHT [J].