强激光使铝靶层裂的模拟实验研究

张万甲; 王悟; 曾元金; 宋春香

doi:10.11858/gywlxb.1994.03.008

强激光使铝靶层裂的模拟实验研究

doi: 10.11858/gywlxb.1994.03.008

中国工程物理研究院流体物理研究所，冲击波物理与爆轰物理实验室，四川成都 610003

详细信息

通讯作者:
张万甲

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出版历程
- 收稿日期: 1993-11-15
- 修回日期: 1994-06-06
- 刊出日期: 1994-09-05

Simulation Study on Laser-Induced Spallation in Aluminum

Laboratory for Shock Wave and Detonation Physics Reseach, Southwest Institute of Fluid Physics, Chengdu 610003, China

More Information

Corresponding author: ZHANG Wan-Jia

摘要

摘要: 激光引起的冲击波可能使得靶材料层裂断裂，这个现象取决于光束的功率密度、脉冲持续时间、靶的厚度和靶材料的性能参数。用气炮驱动的平板撞击实验和概念模拟分析了极短持续时间的三角形压缩应力击波在LY-12铝靶中的传播衰减和层裂强度的时间相关性，根据气炮模拟实验结果，估计了厚度小于2 mm的LY-12铝靶产生层裂所需的激光功率密度和能量密度的阈值条件。
- 应力波传播和衰减 /
- 动态断裂 /
- 激光引起的冲击
Abstract: The occurrence of spall in target caused by laser-driven shock wave depends on the power density of the beam, the induced pressure pulse duration, the target thickness and the target material parameters. The propagation attenuation of a triangular compressive wave and the time-dependence of spallation are discussed in this paper. Based on the gas-gun experimental simulation technique, an incident laser with power density of 103 W/cm2 and energy density of 103 J/cm2 was proposed as the threshold for causing spallation in LY-12 Al target with a thickness of 2 mm.
- propagation and attenuation of a stress wave /
- dynamic fracture /
- laser induced shock

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参考文献(9)

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