激光驱动飞片超高速发射技术实验研究  

Experiment study on technologies for laser-driven flyer hypervelocity launch

作　　者：代福[1,2] 龚自正[1] 曹燕[1] 牛锦超[1] 童靖宇[1] 向树红[1] 杨李茗[2] 

机构地区：[1]北京卫星环境工程研究所,北京100094 [2]成都精密光学工程研究中心,成都610041

出　　处：《强激光与粒子束》2010年第12期3011-3014,共4页High Power Laser and Particle Beams

基　　金：国家国防科技工业局空间碎片专题研究项目(kjsp06209)

摘　　要：介绍了影响激光驱动超高速发射技术的各种因素。分析了激光能量、激光光束空间分布对飞片发射速度及完整性的影响和飞片靶镀膜工艺对飞片速度及完整性的影响。结果表明:空间分布为"平顶型"的激光束有利于发射出完整的飞片。在膜与基底之间增加过渡层Cr可以大大提高膜与基底之间的附着力,从而提高飞片的发射速度。实验上利用波长1 064 nm、脉宽10 ns、能量835 mJ的激光使厚度5μm、直径1 mm的铝飞片的发射速度达到10.4 km/s。大大提升了对微米级空间碎片速度的发射能力。The paper introduces the factors that influence the technologies for laser-driven flyer hypervelocity launch, and studies the effects of laser energy, spatial distribution of laser beam and deposition techniques of coatings on the velocity and integrity of flyers. The results indicate that the spatially 'flat cap' laser beam can launch flyers of good integrity. Adding a Cr film between Al coating and substrate can enhance the adhesion between them, and also enhance the flyer velocity distinctly. With a laser of 1064 nm wavelength and 10 ns pulse duration at laser energy of 835 mJ, the flyer driven out can reach a velocity of 10.4 km/s, whose thickness is 5 μm and diameter is 1 mm.

关 键 词：激光驱动飞片 超高速 发射技术 实验研究 study 发射速度 空间分布 完整性 激光能量 空间碎片 激光光束 基底 飞片速度 镀膜工艺 微米级 平顶型 激光束 过渡层 附着力 直径 

分 类 号：O4[理学—物理]