摘要
超高速微粒在与靶物质撞击时会形成瞬时的等离子体.本文首次设计出两种传感器收集等离子体获取微粒到达传感器的时间,然后通过飞行时间法测量超高速微粒的速度.在等离子体驱动微小碎片加速器上开展了原理实验,采集到了微粒撞击产生的等离子体信号,测量到了超高速微粒的速度,验证了这种时间测量精度高、信噪比高的全新超高速微粒速度的测量方法.
Hypervelocity impact can produce instantaneous plasma during the impact. Through two kind of sensor designed in this paper to collect the plasma to attain the arriving time of the particle, we use the time of flight method to obtain the velocity of the particle. During the elementary experiment in the plasma drag particle accelerator, the impact signal was captured and the measurement of the particle velocity was achieved.The experiment result proves that this method has a high precision in time survey and a high signal to noise ratio.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2010年第2期1385-1390,共6页
Acta Physica Sinica
基金
国家高技术研究发展计划(批准号:2006AA04Z412)资助的课题~~
关键词
等离子体
超高速撞击
速度测量
plasma hypervelocity impact velocity measurement
