【作者】 赵翔； 苏伟； 李东杰； 高杨； 席仕伟；

【Author】 ZHAO Xiang, SU Wei, LI Dong-jie, GAO Yang, XI Shi-wei (Institute of Electronic Engineering, CAEP, Mianyang 621900, China)

【机构】 中国工程物理研究院电子工程研究所；

【摘要】 激光驱动飞片技术作为一项高技术,在基础理论研究和工程实践方面有着广泛的应用。而激光与飞片的能量耦合关系一直是该项技术研究的热点之一。根据激光诱导爆轰波(LSDW)理论,从爆轰波压力的时空分布入手,推导了激光驱动飞片动能耦合效率的数学解析表达式。并以铝飞片为例,重点分析了激光参数(功率密度、脉宽)和飞片结构参数(厚度、直径)与飞片动能耦合效率关系,数值计算结果表明:飞片动能耦合效率与激光脉宽和飞片直径呈递增变化,而与激光功率密度和飞片厚度呈递减变化。更多还原

【Abstract】 As a high technology, laser-driven flyer plate widely applies on basic theoretical research and engineering. The energy relationship between laser and flyer plate is always one of hot spot of the research. According to detonation wave theory supported by laser induced, we analyze time-space distribution of detonation-wave pressure on flyer plate, and deduct the analytic equation of kinetic energy coupling efficient of laser-driven flyer plate. Finally, supposed aluminum flyer plate as an example, we mainly analyze the relation among laser parameters (such as power density, pulse width), flyer construction parameters (such as flyer thickness, diameter) and kinetic energy coupling efficient of flyer plate. The computational results indicate that the kinetic energy coupling efficient of flyer plate increases with pulse width and flyer plate diameter, whereas decreases with power density and flyer plate thickness.更多还原