摘要
从等离子体二维流体方程出发,假定在柱对称电子密度分布的等离子体中,在激光辐射场的区域内,径向电子热压与径向有质动力在稳态情况下平衡,推导出了由有质动力引起的临界密度面附近轴向电子密度轮廓陡变和有场区径向电子密度凹陷结构的解析结果,此结果与266.0nm紫外激光探针所测到的实验结果相符合。
From two dimensional steady state plasma fluid equations, assuming a balance of radial electron thermal pressure and radial pondermotive force in the cyliudrical symmetrio distribution of electron density in laser irradiated region, the analytical results have been deduced of radial electron density dip structure in the laser field region and the axial electron density profile steepening near the critical density due to the pondermotive force. The analytical results are consistent with the experimental results measured by a 266nm UV optical pbobe.
出处
《中国激光》
EI
CAS
CSCD
北大核心
1991年第1期45-50,共6页
Chinese Journal of Lasers
关键词
等离子体
激光
电子密度
凹陷
pondermotive force, density profile steepening, density dip
