Time characterization of high density gas jet from a pulsed supersonic nozzle via laser produced plasma

被引：0
|
作者：
Yan Lixin [1 ]
Zhang Yongsheng
Ma Lianying
Liu Jingru
Cheng Jianping
Lue Min
机构：
[1] Tsing Hua Univ, Dept Engn Phys, Beijing 100084, Peoples R China
[2] NW Inst Nucl Technol, Xian 710024, Peoples R China
来源：
PLASMA SCIENCE & TECHNOLOGY | 2006年 / 8卷 / 04期
关键词：
supersonic nozzle; high-density gas jet; laser produced plasma;
D O I：
暂无
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
A high-density gas jet supersonic nozzle is reported in this paper. The jitter and actuation time of the nozzle is determined by the pin discharge and laser spark radiation respectively. The jitter time of the nozzle is within 10 mu s with the backing pressure as high as 25 bar. With a nanosecond laser pulse focused on the gas jet about 1 mm below the nozzle, the actuation time is calculated to be about 15 ms by detecting the laser produced spark radiation, which reveals the existence of the gas jet and the relative gas density evolving with time. Consequently the gas density is estimated to be well above 10(19) cm(-3), compared with theoretical simulations from the nozzle parameters.
引用
收藏
页码：429 / 432
页数：4
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