摘要
对线极化超短脉冲强场电离进行了回顾和分析。对不同参数的超短脉冲、线极化强激光与轻元素气体靶相互作用产生的等离子体中电子剩余能进行了解析和粒子模拟数值计算。考虑到强场线极化光产生的等离子体的高电离度和低电子温度的特点 ,采用了有别于通常计算逆轫致吸收的方法 ,用零温度近似计算逆轫致效应。模拟过程中还考虑了纵向电场效应。
The electron residual energy in different plasmas of low Z gas target driven by ultra short linear polariz ed laser with different parameters, is analytically calculated and simulated by cloud in cell (CIC) me thod. Considering that plasma produced by linear polarized light in strong field has low temperature and high ionization degree, instead of normal equation of calculating inverse bremsstrahlung rate, zero temperature approximation is adopted. In CIC simulation, longitudinal electric field effect in interaction of strong field with gas target is also included. The results of theoretical calculation of the interaction between linear polarized laser and g as targets of He, Ne as well as the corresponding conclusions are presented.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2001年第4期441-445,共5页
High Power Laser and Particle Beams
基金
中国工程物理研究院科研基金 ( 970 2 3 1)
关键词
光场电离
线极化
阈上电离
逆轫致
电子剩余能
等离子体
optical field ionization
lin ear polarized light
above threshold ionization
inverse bremmsstrahlung
