激光等离子体对靶冲量传递的实验研究  

Experimental Research on Impulse Coupling Between Plasma and Target

作　　者：朱金荣[1] 杨雁南[1] 杨波[1] 沈中华[1] 陆建[1] 倪晓武[1] 

机构地区：[1]南京理工大学理学院

出　　处：《南京航空航天大学学报》2007年第5期628-632,共5页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：国家自然科学基金(60578015;60208004)资助项目;教育部博士点基金(20050288025)资助项目;教育部高校优秀青年教师奖励计划资助项目

摘　　要：针对激光对靶冲量传递问题,提出了悬摆法和光电测速法相结合的测量方法,并应用该技术测量了不同激光功率密度下的激光支持爆轰波对靶产生的冲量,得到了聚焦透镜焦点附近的靶获得的冲量、冲量耦合系数和作用激光功率密度呈非线性关系,且随着作用激光功率密度的增加冲量耦合系数呈饱和趋势,最后根据有关理论对实验测试结果进行了解释。For solving the impulse coupling between the laser and the target, a new method for combining pendulum with light-electric tachometer is presented. The method is used to measure the impulse of laser-supported detonation wave impacting target with a series of laser power density. The nonlinear relation among the impulse of target near the focal spot, impulse coupling coefficient and the laser power density are obtained. Furthermore, there exists the trend of saturation of laser power density with the increment of impulse coupling coefficient. The experimental result is explained based on the relational theory.

关 键 词：激光物理 靶冲量耦合 激光等离子体 激光支持爆轰波 

分 类 号：O439[机械工程—光学工程] TN249[理学—光学]