Analysis and experimental study on threshold of air breakdown by high power microwave
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摘要: 对高功率微波脉冲的大气击穿进行了理论分析和数值模拟，推导了单脉冲和重复频率脉冲两种情况下电子数密度的变化表达式通过计算给出了在不同大气压强、脉冲宽度以及重复频率的条件下，高功率微波脉冲大气击穿阈值的变化规律。设计了高功率微波大气击穿实验系统，并开展了实验研究，实验的结果与数值模拟结果基本一致。Abstract: The air breakdown caused by high power microwave pulse was studied theoretically and simulated numerically. The electron density expressions for single pulse and repetition-frequency pulse were deduced. The thresholds of air breakdown by high power microwave pulse under different atmospheric pressures, pulse widths and repetition frequencies were given. The experimental system of air breakdown by high power microwave pulse was designed and the experimental study was carried out. The result of experiment was mainly in accordance with the theoretical calculation.
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Key words:
- high power microwave /
- air breakdown /
- ionization /
- attachment /
- recombination
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