| 黑腔LEH堵孔实验研究取得新进展 |
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| 引用本文： | 李三伟,郭亮,李琦,李欣,胡昕,曹柱荣,侯立飞,王峰,杨家敏,江少恩,丁永坤,张保汉.黑腔LEH堵孔实验研究取得新进展[J].强激光与粒子束,2018,30(5):050101-1-050101-3. |
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| 作者姓名： | 李三伟 郭亮 李琦 李欣 胡昕 曹柱荣 侯立飞 王峰 杨家敏 江少恩 丁永坤 张保汉 |
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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 621900 |
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| 基金项目： | 国家自然科学基金青年基金项目11705180 |
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| 摘 要： | 在神光Ⅲ主机激光装置上，采用单端带激光注入孔(LEH)的桶状黑腔，利用极区分幅相机和极区附近X光条纹相机获得黑腔内壁附近和LEH附近等离子体的X射线发射时空演化图像，进而研究LEH堵孔特性。X光图像清晰地展示了激光光斑移动、LEH附近等离子体缩孔和堵孔过程，为优化LEH尺寸提供了实验依据。
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| 关 键 词： | 黑腔 等离子体 激光注入孔 堵孔 |
| 收稿时间： | 2018-01-30 |
Experimental study on laser entrance hole closure of hohlraum in ICF |
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| Institution: | 1.Research Center of Laser Fusion, CAEP, Mianyang 621900, China2.Institute of Applied Physics and Computational Mathematics, Beijing 100088, China |
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| Abstract: | On Shenguang Ⅲ laser facility, 32 laser beams were symmetrically injected a gas-filled hohlraum to create plasma situation which is close to the ignition condition. An X-ray framing camera on the polar station and an X-ray streak camera near the pole were utilized to obtain the temporal and spacial evolution X-ray images of the plasma from the hohlraum wall and near the laser entrance hole (LEH), which were used to analyse the LEH closure feature of the hohlraum with various LEH size. The experimental results clearly demonstrated the evolution of laser spot motion, plasma expanding near the LEH and closure of the LEH, which supplied the foundation to optimize the LEH dimension. |
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