Influence of Surface Radius Curvature on Laser Plasma Propulsion with Ablation Water Propellant  

作　　者：梁田 郑志远 张思齐 汤伟冲 肖珂 梁文飞 高禄 高华 

机构地区：[1]School of Science,China University of Geosciences

出　　处：《Plasma Science and Technology》2016年第10期1034-1037,共4页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(No.10905049);Fundamental Research Funds for the Central Universities of China(Nos.53200859165,2562010050)

摘　　要：The surface shape of liquid water is well controlled during nanosecond pulse laser ablation plasma propulsion. In this study, we measured the effect of the shape on the coupling coefficient and the specific impulse. We found that the coupling coefficient and specific impulse could be optimized by varying the surface convexity. Based on the analysis of the surface radius curvature, we demonstrate that the convex surface changes the laser focal positions to achieve high efficiency.The surface shape of liquid water is well controlled during nanosecond pulse laser ablation plasma propulsion. In this study, we measured the effect of the shape on the coupling coefficient and the specific impulse. We found that the coupling coefficient and specific impulse could be optimized by varying the surface convexity. Based on the analysis of the surface radius curvature, we demonstrate that the convex surface changes the laser focal positions to achieve high efficiency.

关 键 词：plasma propulsion liquid propellant surface shape 

分 类 号：TN249[电子电信—物理电子学] O53[理学—等离子体物理]