超高速碰撞产生等离子体的实验

Experimental of Plasma from Hypervelocity Impact

利用二级轻气炮实验平台开展了2A12铝材料的超高速碰撞实验,并设计了高速摄影系统和Langmuir探针诊断系统,对实验中超高速碰撞产生的等离子体进行了诊断,获取了等离子体产生过程的高速摄影图片以及等离子体电子温度变化曲线。结果表明,超高速碰撞中所产生等离子体的主要喷射方向与弹道方向呈对称关系,等离子体的电子温度峰值约为0.7e V、生存时间约为1.2ms。

Based on a two-stage light-gas gun experimental platform,the hypervelocity impactexperiment of2A12aluminum is performed.A high-speed photography system and a sweep Langmuirprobe diagnostic system are designed to investigate the generated plasma.The high-speed photographsand the electron temperature curve of hypervelocity impact plasma are obtained.The results show that,the main jet direction of the plasma is symmetric with the flight direction of the projectile.The electrontemperature and the survival time of the plasma are about0.7eV and1.2ms,respectively.