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物理学报. 1988, 37(10): 1690-1693.
doi: 10.7498/aps.37.1690.
激光驱动高压冲击波的实验观察
- 收稿日期: 1988-02-01
- 刊出日期: 1988-05-05
摘要: 本文介绍能量约500J,脉宽约1.2ns的高功率激光脉冲聚焦辐照铝箔靶或铝台阶靶,用可见光超快速扫描相机观察靶背面冲击加热发光的情况。实验表明,采用特别的组合透镜聚焦,使激光冲击波的平面性得到明显的改善。实验测得铝台阶中的冲击波速度为17.6μm/ns,并推算出相应的冲击波压力达4.4Mbar。
English Abstract
EXPERIMENTAL OBSERVATION OF LASER DRIVEN HIGH PRESSURE SHOCK WAVES
- Received Date:
01 February 1988
- Published Online:
05 May 1988
Abstract: This paper present the experimental records of the light emitting from heating lumines-cence at the back surface of aluminium foil or stepped targets, obtained by an optical ultra-fast speed streak camera. The target was irradiated by a focused high power laser beam with 500 J output energy in 1.2 ns FWHM pulse. The results showed that the degree of fllatness of the laser driven shock wave was obviously improved due to application of the special com-Lined lens. In these experiments the shock wave velocity in the step of aluminium target was obtained to be 17.6 m/ns, correspounding to shock wave pressure of 4.4 Mbar.
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