摘要
当非均匀超短脉冲强激光照射均匀分布的过稠密等离子体时，相对论效应导致电子质量增大，相对论电子等离子体频率减小，激光能更深地进入等离子体产生强烈吸收。由于入射激光的径向不均匀性，钻孔效应显著。通过二维粒子模拟结果清晰地观察到了等离子体通道的产生。
As an intense, nonuniform ultrashort laser pulse strikes the overdense plasma, the electron mass increases and the electron plasma frequency decreases due to relativistic effect. Laser wave can penetrate the plasma more deeply. When laser beam is nonuniform, a channel forms as a result of strong ponderomotive force which is clearly shown by twodimensional particle simulation.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
1998年第3期433-436,共4页
High Power Laser and Particle Beams
基金
国家863惯性约束聚变领域及其青年科学基金
国家自然科学基金部分资助
关键词
激光
等离子体
粒子模拟
钻孔效应
快点
ICF
laser plasma interaction, ultrashort laser pulse, particle simulation of plasma, boring effect
