| 叠片法测量脉冲X射线源焦斑 |
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| 引用本文： | 高屹, 马继明, 张众, 等. 叠片法测量脉冲X射线源焦斑[J]. 强激光与粒子束, 2010, 22(12). |
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| 作者姓名： | 高屹 马继明 张众 张鹏飞 孙江 王志国 尹佳辉 梁天学 杜泰斌 |
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| 作者单位： | 1.清华大学 工程物理系, 北京 1 00084;;;2.西北核技术研究所, 西安 71 0024 |
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| 摘 要： | 介绍了叠片法测量脉冲X射线源焦斑的原理。对确定结构和尺寸的金属、薄膜叠片及测试系统布局，数值计算了叠片法的空间分辨及对均匀分布线光源的输出响应，得到响应曲线半高宽与焦斑尺寸的对应关系。计算结果表明，叠片法不适用于测量小于2 mm的焦斑。在感应电压叠加器上开展了阳极杆箍缩二极管实验，采用叠片法测量二极管X射线源轴向焦斑，与针孔照相结果基本相符，说明叠片法可用于脉冲X射线源焦斑尺寸测量。
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| 关 键 词： | 叠片法 焦斑尺寸 脉冲X射线源 空间分辨 针孔照相 阳极杆箍缩二极管 |
| 收稿时间： | 1900-01-01; |
Spot size measurement for pulsed X-ray source with lamination method |
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| gao yi, ma jiming, zhang zhong, et al. Spot size measurement for pulsed X-ray source with lamination method[J]. High Power Laser and Particle Beams, 2010, 22. |
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| Authors: | Gao Yi Ma Jiming Zhang Zhong Zhang Pengfei Sun Jiang Wang Zhiguo Yin Jiahui Liang Tianxue Du Taibin |
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| Affiliation: | 1. Department of Engineering Physics,Tsinghua University,Beijing 100084,China;;;2. Northwest Institute of Nuclear Technology,P.O.Box 69-10,Xi’an 710024,China |
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| Abstract: | The principle of pulsed X-ray spot size measurement with lamination method was presented. The spatial resolution and output response for uniformly distributed line source of the metal-film lamination were calculated numerically. The corresponding relation between the FWHM of the response curve and the spot size was obtained. And the calculation results indicate that the metal-film lamination is not suitable for measurement of spot size less than 2 mm. Rod-pinch diode(RPD) experiments were performed on the inductive voltage adder, and the axial extent of the RPD X-ray source was measured with lamination method. Under the hypothesis of uniformly distributed line source, the axial spot size of the X-ray source was obtained, about 5.2 mm, consistent with the measuring result of the pinhole cam |
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| Keywords: | spot size pulsed X-ray source spatial resolution pinhole photography rod-pinch diode |
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