重复频率高功率微波脉冲的大气击穿

 理论研究了重复频率高功率微波脉冲在大气中的传输特性，推导了n个高功率微波脉冲之后空间某点的电子密度，数值模拟并给出了在不同微波频率、大气压强、脉冲宽度以及脉冲间隔的条件下，大气击穿时，透射过去的脉冲个数与微波功率的关系。模拟结果表明：当微波脉冲参数一定时，压强越小，透射过去的脉冲个数越少，大气越容易发生击穿；当压强一定时，脉宽越宽,微波频率越小，透射过去的脉冲个数越少，大气越容易发生击穿。

Air breakdown by repetition-rate high power microwave pulse

The propagation characteristics of the repetition-rate high-power microwave(HPM) in atmosphere were studied theoretically,and the electron density expression at a point in atmosphere was educed after HPM pulses transmitting.The relationship between the number of the penetrated pulses and the microwave power was described under different atmospheric pressure and microwave pulse parameters.The simulation results indicate that the smaller the atmospheric pressure is,the smaller the number of the penetrated pulses is when air gets breakdown at the same microwave pulse parameters,and the wider the pulse width and the lower the microwave frequency,the smaller the number of the penetrated pulses.