Femtosecond laser-guided electric discharge in air -: art. no. 057401

被引：131
作者：
Tzortzakis, S
Prade, B
Franco, M
Mysyrowicz, A
Hüller, S
Mora, P
机构：
[1] Ecole Polytech, Ecole Natl Super Tech Avancees, CNRS, UMR 7639,Lab Opt Appl, F-91761 Palaiseau, France
[2] Ecole Polytech, Ctr Phys Theor, CNRS, UMR 7644, F-91128 Palaiseau, France
来源：
PHYSICAL REVIEW E | 2001年 / 64卷 / 05期
关键词：
D O I：
10.1103/PhysRevE.64.057401
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 filament due to the self-guided propagation of an infrared femtosecond laser pulse in atmospheric-pressure air is used to trigger and guide an electric discharge. The long low density plasma channel due to the filament is first heated by the Joule effect during an initial transient plasma stage, The heated channel of recombined gas then hydrodynamically expands radially. The onset of a discharge starts when the density depression on axis reaches the threshold discharge value. This model is supported by detailed experimental and numerical analysis.
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