| 基于激光驱动等离子体X光源的X射线相衬成像 |
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| 引用本文： | 晏骥,江少恩,阴泽杰.基于激光驱动等离子体X光源的X射线相衬成像[J].强激光与粒子束,2010,22(9). |
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| 作者姓名： | 晏骥 江少恩 阴泽杰 |
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| 作者单位： | 1． 中国科学技术大学 近代物理系， 合肥 230026； 2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： | 国家自然科学基金项目 |
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| 摘 要： | 为了诊断惯性约束聚变(ICF)内爆靶丸球壳的多层信息,在神光Ⅱ激光器上对激光驱动等离子体X光源的相衬成像进行了研究。利用神光Ⅱ第9路激光驱动平面Ti靶获得X光源,在10μm的针孔约束下作为次级点光源对样品成像,用X光胶片记录。成功地将相衬成像技术应用于ICF实验,综合考虑成像放大倍数、分辨力、成像衬度和抑制烧蚀碎片等因素,选择合适的实验条件,成功获得了清晰的双层内爆靶丸球壳结构,空间分辨力优于10μm。
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| 关 键 词： | 惯性约束聚变 相衬成像 激光等离子体X光源 针孔辅助点背光 |
| 收稿时间： | 1900-01-01; |
In-line phase-contrast imaging with laser-based hard X-ray source |
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| Yan Ji,Jiang Shaoen,Yin Zejie.In-line phase-contrast imaging with laser-based hard X-ray source[J].High Power Laser and Particle Beams,2010,22(9). |
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| Authors: | Yan Ji Jiang Shaoen Yin Zejie |
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| Institution: | 1． Department of Modern Physics， University of Science and Technology of China， Hefei 230026， China；2． Research Center of Laser Fusion，CAEP， P. O. Box 919-986， Mianyang 621900， China |
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| Abstract: | The research on in-line phase-contrast imaging with laser-based hard X-ray source was carried out on Shanghai “Shenguang Ⅱ” laser facility, in which the X-rays emitted from laser-produced plasma Ti targets passed through the pinhole with diameter 10 μm, and the X-ray film was used to record the result. Multi-layer capsule structure was obtained in this experiment with the spatial resolution better than 10 μm. The research indicates that the phase contrast imaging have advantages in low-Z material diagnosis and can be used in ICF experiment． |
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| Keywords: | phase contrast imaging laser-based plasma X-ray source pinhole assisted point backlight |
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