| 一种新的线成像激光干涉测速系统 |
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| 引用本文： | 刘寿先,李泽仁,彭其先,陈光华,刘俊,袁树云.一种新的线成像激光干涉测速系统[J].强激光与粒子束,2009,21(2). |
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| 作者姓名： | 刘寿先 李泽仁 彭其先 陈光华 刘俊 袁树云 |
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| 作者单位： | 中国工程物理研究院 流体物理研究所, 四川 绵阳 621900 |
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| 摘 要： | 设计并搭建了一种新的线成像激光干涉测速系统，用于小样品材料的冲击波诊断或飞片速度测量。系统采用梳状干涉条纹做为信号载体，利用1维光纤阵列＋光电倍增管＋数字示波器替代变像管扫描相机作为记录设备，记录伪推挽四路干涉信号，实现1 ns时间分辨和86 μm空间分辨。用它测量了脉冲激光驱动铝膜飞片的速度场，获得对比度较好的信号，数据处理结果揭示了飞片加速过程将近20 ns，飞片的平面度为14.8 mrad。实验证明，该线成像激光干涉测速系统具有一定实用性。
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| 关 键 词： | 激光干涉测速 线成像 冲击波诊断 速度 |
| 收稿时间： | 1900-01-01; |
A novel line-imaging velocity interferometer for shock diagnostics |
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| Liu Shouxian,Li Zeren,Peng Qixian,Chen Guanghua,Liu Jun,Yuan Shuyun.A novel line-imaging velocity interferometer for shock diagnostics[J].High Power Laser and Particle Beams,2009,21(2). |
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| Authors: | Liu Shouxian Li Zeren Peng Qixian Chen Guanghua Liu Jun Yuan Shuyun |
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| Institution: | Institute of Fluid Physics, CAEP, P.O.Box 919-109, Mianyang 621900, China |
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| Abstract: | A novel line-imaging velocity interferometer was developed and implemented, which is suited for small scale specimens shock wave experiments. Using a combination of fiber array, electron-multiplier phototube and digital oscilloscope for recording a comb fringe signal, the velocimeter was capable of 1 ns time resolution and 86 μm spatial resolution. Velocity measurement for Al flyer driven by laser was implemented to test this system. The results showed that the flyer has a 20 ns acceleration history and 14.8 mrad planarity. The experiment confirmed that the new system is valuable for temporal-spatial shock diagnositics. |
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| Keywords: | line-imaging shock diagnostics velocity |
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