Experimental Studies of the Thermal Shock Wave Produced in the Flat Plate Targets Bombarded by Electron Beam on 'Flash-Ⅱ'
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摘要: 热击波是电子束辐照靶材料时在其内产生材料响应的一个重要力学现象。论述了近两年来我们在闪光二号装置上进行电子束辐照平板靶产生热击波的实验研究。使用的靶厚为2.8~6.5 nm，靶材为LY-12铝，靶上能通量为87~152 J/cm2。实验结果表明，实测热击波应力峰值为0.35~2.0 GPa，热击波平均作用时间约为0.29 s，均半高宽约为0.14 s，平均上升时间约为0.10 s。Abstract: The thermal shock wave is an important mechanic phenomenon of the material response produced in the target material bombarded by electron beam. In this paper, the experimental studies of the thermal shock wave produced in the flat plate targets bombarded by electron beam on FLASH Ⅱ equipment during the recent years are discussed. The target material is LY-12 aluminum alloy with thicknesses of 2.8～6.5 mm. The range of energy fluxes on targets is 87～152 J/cm2. Experimentally measured stress peaks of the thermal shock waves is 0.35～2.0 GPa, average acting time of the thermal shock waves about 0.29 s, average semi-high width about 0.14 s, and average rise time about 0.10 s.
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Key words:
- electron beam /
- material response /
- thermal shock wave /
- flat plate target /
- quartzcrystal transducer
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Graham R A, Neilson F W, et al. J Appl Phys, 1965, 36(5): 1775. 吴嵩毓. 爆炸与冲击, 1985, 5(4): 61. 王礼立. 应力波基础. 北京: 国防工业出版社, 1985. 经福谦, 等. 实验物态方程导引. 北京: 科学出版社, 1986. -
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