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根据雪崩电离、逆轫致吸收、Saha方程和等离子体状态方程等实现了用迎风TVD格式对空气的击穿过程进行了数值模拟，结合光学击穿和激光感应热击穿理论，研究了Nd：YAG高功率脉冲激光与空气相互作用时，等离子体场的形成过程，得到了激光等离子体流场的非定常解。
According to avalanche ionization, inverse absorption absorption, Saha equation and plasma equation of state, the air breakdown process is simulated by TVD windward method. Combined with optical breakdown and laser induced thermal breakdown theory, the effects of Nd: YAG high-power pulsed laser interacts with air, the formation of the plasma field and the unsteady solution of the laser plasma field are obtained.