The characteristics of confined ablation in laser propulsion  

作　　者：郑志远 张杰 郝作强 远晓辉 张喆 鲁欣 王兆华 魏志义 

机构地区：[1]Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China [2]State Key Laboratory of Transient Optics Technolog'y, Chinese Academy of Sciences, Xi'an 710068, China

出　　处：《Chinese Physics B》2006年第3期580-584,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （Grant Nos 10374116 and 60321003） and the National High Technology Inertial Confinement Fusion Foundation of China.

摘　　要：Compared with direct ablation, confined ablation provides an effective way to obtain a large target momentum and a high coupling coefficient. By using a transparent glass layer to cover the target surface, the coupling coefficient is enhanced by an order of magnitude. With the increase of the gap width between the target surface and the cover layer, the coupling coefficient exponentially decreases. It is found that the coupling coefficient is also related to the thickness of the cover layer.Compared with direct ablation, confined ablation provides an effective way to obtain a large target momentum and a high coupling coefficient. By using a transparent glass layer to cover the target surface, the coupling coefficient is enhanced by an order of magnitude. With the increase of the gap width between the target surface and the cover layer, the coupling coefficient exponentially decreases. It is found that the coupling coefficient is also related to the thickness of the cover layer.

关 键 词：laser plasma PROPULSION confinement ablation 

分 类 号：O53[理学—等离子体物理] TN24[理学—物理]