| 辐射驱动冲击波速度被动式测量 |
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| 引用本文： | 王哲斌, 蒋小华, 李三伟, 等. 辐射驱动冲击波速度被动式测量[J]. 强激光与粒子束, 2013, 25: 375-380. doi: 10.3788/HPLPB20132502.0375 |
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| 作者姓名： | 王哲斌 蒋小华 李三伟 张惠鸽 况龙钰 王传珂 刘永刚 于瑞珍 彭晓世 杨冬 章欢 李志超 张继彦 |
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| 作者单位： | 1.中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621 900 |
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| 摘 要： | 在神光Ⅱ和神光Ⅲ原型装置上采用了辐射驱动冲击波速度被动式测量技术，对冲击波发光图像信噪比进行了理论分析和实验研究，结果表明：靶室内杂散光比冲击波信号至少强4个量级以上，是影响信噪比的关键因素。据此提出了信噪比控制技术，通过电磁屏蔽优化，采用了基于光触发的快时间分辨测量技术，提高了冲击波速度测量精度。基于冲击波测量辐射温度，对辐射驱动冲击波速度被动式测量技术进行了考核。实验测量的冲击波发光图像清晰，数据信噪比及冲击波速度和物理预期一致，验证了技术的可靠性。
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| 关 键 词： | 激光聚变 冲击波发光图像 冲击波速度测量 光学条纹相机 |
| 收稿时间： | 2012-02-15 |
| 修稿时间： | 2012-06-26 |
Passive measurement of radiation driven shock velocity |
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| Wang Zhebin, Jiang Xiaohua, Li Sanwei, et al. Passive measurement of radiation driven shock velocity[J]. High Power Laser and Particle Beams, 2013, 25: 375-380. doi: 10.3788/HPLPB20132502.0375 |
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| Authors: | Wang Zhebin Jiang Xiaohua Li Sanwei Zhang Huige Kuang Longyu Wang Chuanke Liu Yonggang Yu Ruizhen Peng Xiaoshi Yang Dong Zhang Huan Li Zhichao Zhang Jiyan |
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| Affiliation: | 1. Research Center of Laser Fusion,CAEP,P.O.Box 919-986,Mianyang 621900,China |
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| Abstract: | The passive diagnostic for radiation driven shock velocity is of critical importance in the research of radiation driven fusion and extreme high-pressure equation of state. Such diagnostic has been set up on SG-Ⅱ and the laser prototype facility. The control technique of signal-to-noise of shock breakout images has been developed based on the theoretical analysis and experimental study which shows that the stray light such as stimulated scattering light is 4 order stronger than the shock light. The precise temporal-resolved technique has also been developed based on the successful application of the faster sweep rate of the streak camera with aids of high-quality light triggering instead of traditional electronic triggering. The developed passive diagnostic has been validated successfully by an experiment whose results show the shock image is clear and the deduced shock velocity is consistent with the calculated one. |
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| Keywords: | laser fusion shock breakout image measurement of shock velocity optic streak camera |
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