Microwave diagnostics of laser-induced avalanche ionization in air

被引：0
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作者：
Zhang, Zhili [1 ]
Shneider, Mikhail N. [1 ]
Miles, Richard B. [1 ]
机构：
[1] Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544
来源：
Journal of Applied Physics | 2006年 / 100卷 / 07期
关键词：
This work presents a simplified model of microwave scattering during the avalanche ionization stage of laser breakdown and corresponding experimental results of microwave scattering from laser breakdown in room air. The model assumes and measurements confirm that the breakdown regime can be viewed as a point dipole scatterer of the microwave radiation and thus directly related to the time evolving number of electrons. The delay between the laser pulse and the rise of the microwave scattering signal is a direct measure of the avalanche ionization process. © 2006 American Institute of Physics;
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