基于激光驱动的复合飞片参数与性能  

Parameters and Characteristics of Multi-flyers Driven by Laser

作　　者：覃文志[1] 王猛[1] 陈清畴[1] 蒋小华[1] 

机构地区：[1]中国工程物理研究院化工材料研究所,四川绵阳621999

出　　处：《含能材料》2015年第2期173-177,共5页Chinese Journal of Energetic Materials

基　　金：中国工程物理研究院化材所青年人才基金(QNRC-201303)

摘　　要：在激光驱动飞片技术中,复合飞片的使用可提高对激光的能量利用率,从而获得更高的速度。为进一步研究复合飞片各层参数对激光驱动飞片速度的影响,采用Ti、C、Al2O3、Al等材料制备了不同参数的复合飞片,利用小型掺钕钇铝石榴石晶体ND：YAG固体激光器在200-300 mJ能量下进行了驱动飞片试验,并通过光子多普勒测速仪（PDV）对飞片速度进行了测试。结果表明,在厚度控制合理的情况下,增加了吸收层（0.15μm,Ti）的复合飞片最大速度较单层飞片提高了约110%,同时增加了烧蚀层（0.3μm,Al）和隔热层（1.0μm,Al2O3）的复合飞片最大速度较单层飞片提高了约41%,并对复合飞片的能量利用率及加速距离进行了分析,表明激光驱动复合飞片在0.02μs左右可达到最大速度的90%,在0.08μs左右可达到最大速度。In laser-driven flyer technology, the efficiency of laser and the velocity of flyers can be improved by the using of multi- flyers. In order to obtain the influence of each layer in multi-flyer with different materials and thickness on the velocity of flyers, multi-flyers with different parameters were prepared by Ti, C, Al2O3and Al. The multi-flyers were driven by Neodymium-Yttrium- Aluminium Garnet-Laser laser system in the energy range between 200 mJ and 300 mJ. The velocity of multi-flyers were tested by Photonic Doppler Velocimetry （PDV）. Results show that the velocity of multi-flyers with absorption layer （0.15μm, Ti） increases 110% compared to single flyer, and the velocity of multi-flyer with insulation layer（0.3 μm, Al） and ablation layer（ 1.0 μm, Al2O3 ） increases 41% compared to single flyer. Energy utilization and accelerate distance of different multi-flyers were analyzed. It indicates that the velocity of laser-driven multi-flyers can reach 90% of maximum velocity at 0.02 μs, and reach a maximum at 0.08 μs.

关 键 词：复合飞片 光子多普勒测速仪(PDV) 飞片速度 激光驱动 

分 类 号：TN249[电子电信—物理电子学]