超高速碰撞实验中跟进气体对等离子体信号的影响  

Influence of the Sequela Gas Accompanied with the Plasma Generated by Hypervelocity Impact

作　　者：张东江[1] 张庆明[1] 甘云丹[1] 李一磊[1] 

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《北京理工大学学报》2011年第11期1379-1382,共4页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(11032003)

摘　　要：针对二级轻气炮加载铝弹丸超高速碰撞靶板产生等离子体的过程中,弹丸后面跟进气体有可能对等离子体信号造成影响的问题,利用三探针、磁线圈、高温计等实验设备分别对有铝弹丸和无弹丸两发实验进行了诊断测量,得出了相应的电子温度、磁感应强度、物质温度变化曲线.比较实验结果得出:弹丸超高速碰撞靶板产生等离子体的过程中跟进气体信号幅值较小,不会对实验结果造成明显影响.During the measurement of plasma generated by hypervelocity impact in the two-stage gas gun, the gas following the projectile might disturb the physical measurement of plasma signal. The triple probe, coil and pyrometer were used to detect how much the influence of the sequela gas. By comparison, the results show that the signal value of the sequela gas is relatively small and could not produce obvious influence to the measurement of plasma parameter.

关 键 词：超高速碰撞 等离子体 跟进气体 

分 类 号：O531[理学—等离子体物理]