| 针孔点背光技术实验 |
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| 引用本文： | 江少恩,黄翼翔,胡昕,于燕宁,于瑞珍. 针孔点背光技术实验[J]. 光子学报, 2006, 35(2): 290-293 |
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| 作者姓名： | 江少恩 黄翼翔 胡昕 于燕宁 于瑞珍 |
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| 作者单位： | 中国工程物理研究院激光聚变研究中心,四川绵阳,621900;中国工程物理研究院激光聚变研究中心,四川绵阳,621900;中国工程物理研究院激光聚变研究中心,四川绵阳,621900;中国工程物理研究院激光聚变研究中心,四川绵阳,621900;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： | 高温高密度等离子体物理重点实验室基金 , 中国物理研究院科研项目 |
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| 摘 要： | 在“星光Ⅱ”装置上进行针孔点背光技术的演示实验.利用激光辐照φ50μm的小孔产生的堵孔效应使X光的脉宽缩短，起到类似于短脉冲点背光源的作用.另外利用成像方法，实验演示了由面背光方式获得点背光技术，称之为点针孔背光技术.实验结果表明：结合堵孔效应和点背光方式，能获得与点背光同样的结果，这样可以避开点背光对激光器较为苛刻的要求.
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| 关 键 词： | 堵孔效应 针孔点背光 背光技术 |
| 收稿时间： | 2004-09-27 |
| 修稿时间： | 2004-09-27 |
Experiments of Point-projection Backlighting Using Pinholes |
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| Jiang Shaoen,Huang Yixiang,Hu Xin,Yu Yanning,Yu Ruizhen. Experiments of Point-projection Backlighting Using Pinholes[J]. Acta Photonica Sinica, 2006, 35(2): 290-293 |
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| Authors: | Jiang Shaoen Huang Yixiang Hu Xin Yu Yanning Yu Ruizhen |
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| Affiliation: | Laser Fusion Research Center, China Academy of Engineering Physics, Sichuan Mianyang 621900 |
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| Abstract: | X-ray backlighting is a powerful tool for diagnosing a large variety of high-density phenomena.In pinhole-assisted point-projection backlighting,pinholes are placed a small distance away from the backlighter source to produce images with large field of view. The techniques of point backlighting using pinhole was experimentally demonstrated on Xingguang-Ⅱ facility (XG-Ⅱ) with 80 J,1 ns,351 nm laser pulse. The pinhole drilled on gold in diameter of 50 μm was irradiated by laser beam and pinhole closure was produced in order that x-ray pulse width was shortened,and then the function similar to point backlighting was obtained. The experimental results shown that the pinhole-assisted point-projection backlighting was feasible. |
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| Keywords: | Pinhole closure Pinhole-assisted point-projection backlighting Backlighting technique |
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