| 基于PFN-Marx技术的200 keV脉冲X射线源设计与实验 |
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| 引用本文： | 耿力东,谢卫平,羊强,袁建强,刘宏伟,曹龙博,韩文辉.基于PFN-Marx技术的200 keV脉冲X射线源设计与实验[J].强激光与粒子束,2022,34(8):085002-1-085002-5. |
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| 作者姓名： | 耿力东 谢卫平 羊强 袁建强 刘宏伟 曹龙博 韩文辉 |
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| 作者单位： | 1.中国工程物理研究院 流体物理研究所，四川 绵阳 621999 |
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| 基金项目： | 中国工程物理研究院流体物理研究所规划发展项目（TCGH025210） |
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| 摘 要： | 基于PFN-Marx技术路线研制了200 kV脉冲驱动源，采用了超前触发技术，实现了在40 Ω水电阻负载上输出电压约200 kV、前沿约25 ns、脉冲宽度约62 ns的脉冲高压。设计了工作电压为200 kV的“Washer-Needle”型二极管，在二极管电压210 kV、电流5 kA条件下，输出X射线脉冲宽度约40 ns，X射线焦斑直径1.2 mm，1 m处照射剂量约15 mR。
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| 关 键 词： | 脉冲X射线源 200 keV PFN-Marx 脉冲驱动源 闪光照相 |
| 收稿时间： | 2021-12-24 |
Design and experiments of the 200 keV pulse X-ray source based on PFN-Marx technology |
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| Institution: | 1.Institute of Fluid Physics, CAEP, Mianyang 6219992.China Academy of Engineering Physics, Mianyang 621999 |
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| Abstract: | The 200 keV X-ray pulser has a good surface density resolution when being used in the imaging diagnosis of high speed and low density regions in ejecta. Heuce it has become one of the important technical diagnostics methods of ejecta. This papper develops a 200 keV pulse driver based on the PFN-Marx technology. Using a pre-trigger method, the 200 kV pulse of a 62 ns width and a 25 ns rise time is produced on the 40 Ω water resistance, A “Washer-Needle” type diode which can work under 200 kV voltage is also designed. When the diode operating voltage is 210 kV, the pulser outputs the X-ray pulse of a 40 ns width, a 1.2 mm spot size and a 15 mR dose at 1 m distance . |
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