纳秒激光冲击加载的全过程诊断

李俊 李加波 周显明 王翔 翁继东 李剑峰

李俊, 李加波, 周显明, 王翔, 翁继东, 李剑峰. 纳秒激光冲击加载的全过程诊断[J]. 高压物理学报, 2012, 26(4): 369-374. doi: 10.11858/gywlxb.2012.04.002
引用本文: 李俊, 李加波, 周显明, 王翔, 翁继东, 李剑峰. 纳秒激光冲击加载的全过程诊断[J]. 高压物理学报, 2012, 26(4): 369-374. doi: 10.11858/gywlxb.2012.04.002
LI Jun, LI Jia-Bo, ZHOU Xian-Ming, WANG Xiang, WENG Ji-Dong, LI Jian-Feng. An Integrated Velocity Profile Measurement from Nanosecond Pulse Laser-Driven Mini-Flyer to Shocked Sample[J]. Chinese Journal of High Pressure Physics, 2012, 26(4): 369-374. doi: 10.11858/gywlxb.2012.04.002
Citation: LI Jun, LI Jia-Bo, ZHOU Xian-Ming, WANG Xiang, WENG Ji-Dong, LI Jian-Feng. An Integrated Velocity Profile Measurement from Nanosecond Pulse Laser-Driven Mini-Flyer to Shocked Sample[J]. Chinese Journal of High Pressure Physics, 2012, 26(4): 369-374. doi: 10.11858/gywlxb.2012.04.002

纳秒激光冲击加载的全过程诊断

doi: 10.11858/gywlxb.2012.04.002
详细信息
    通讯作者:

    周显明 E-mail:xianming_zhou@tom.com

An Integrated Velocity Profile Measurement from Nanosecond Pulse Laser-Driven Mini-Flyer to Shocked Sample

  • 摘要: 与传统的冲击加载方式相比,激光驱动试样具有微尺寸(直径小于1 mm,厚度约10 m)、超短作用过程(纳秒量级)等特点,但其速度变化历史的实时诊断颇为困难,因此发展适用于激光驱动的高时空分辨率的实时测试技术是十分重要和有价值的。采用桌面式脉冲Nd:YAG激光器作为加载平台,发展了激光加载下的小焦点多普勒光纤探针测量系统(焦斑直径约200 m,时间分辨力约50 ps),成功实现了从激光脉冲驱动微尺寸飞片飞行直至撞击Z-切石英试样的全过程实时诊断。实验结果显示,将6 m 厚Al箔飞片驱动至2.48 km/s时,撞击Z-切石英试样的粒子速度为1.27 km/s,与Hugoniot理论计算结果相符,表明该测试技术是可靠、有效的;多层薄膜靶结构设计(基底/烧蚀层/硅油/Al箔)可提升激光与靶物质的能量耦合效率,使飞片保持更好的宏观完整性。为开展超短脉冲激光加载下材料动态特性研究提供了一种有效的技术途径。

     

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出版历程
  • 收稿日期:  2010-11-21
  • 修回日期:  2011-04-11
  • 发布日期:  2012-08-15

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