Optical diagnostics of femtosecond laser plasmas

被引：5
|
作者：
Li, YT
Zhang, J
Chen, LM
Xia, JF
Teng, H
Zhao, LZ
Lin, JQ
Li, YJ
Wei, ZY
Wang, L
Jiang, WM
机构：
[1] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China
[2] China Acad Engn Phys, Res Ctr Laser Fus, Mianyang 621900, Peoples R China
来源：
SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY | 2001年 / 44卷 / 01期
基金：
中国国家自然科学基金;
关键词：
femtosecond laser plasma; optical diagnostic; electron density gradient;
D O I：
10.1007/BF02872288
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
Optical diagnostics of evolution of plasmas produced by ultrashort laser pulses is carried out using a femtosecond probing beam. The time sequence of plasma shadowgrams and interferograms are obtained. The filamentation instability in high-density region induces the local density modification. Large-scale toroidal magnetic fields confine plasma expansion in the transverse direction, resulting in the formation of a plasma jet. The plasma expansion along the target normal direction is found to scale as t(1/2).
引用
收藏
页码：98 / 102
页数：5
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