| Laser wakefield electron acceleration for γ-ray radiography application |
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| 引用本文： | 吴玉迟,赵宗清,朱斌,董克攻,温贤伦,何颖玲,谷渝秋,张保汉.Laser wakefield electron acceleration for γ-ray radiography application[J].Chinese Optics Letters,2012(6):89-92. |
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| 作者姓名： | 吴玉迟 赵宗清 朱斌 董克攻 温贤伦 何颖玲 谷渝秋 张保汉 |
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| 作者单位： | Science and Technology on Plasma Physics Laboratory, Research Center of Laser Fusion,China Academy of Engineering Physics |
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| 基金项目： | supported by the China Acdamy of Engineering Physics Project (No. 2006Z0202);the StateKey Program of the National Natural Science of China(No. 10535030);the National Natural Science Foundation of China (No. 10975121) |
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| 摘 要： | An electron beam is obtained using laser wakefield electron accelerator, and converted into a γ-ray source after undergoing bremsstrahlung radiation in a dense material. A quasi-monoenergetic structure is observed when the length of the plasma channel was modified. The structure has a 58-MeV peak energy, 15mrad (full-width at half-maximum) divergence angle, and 340-pC charge. The γ-ray source generated by this high-quality electron beam is brighter and has higher spatial and temporal resolutions than other conventional sources. A γ-ray radiography demonstrational experiment is performed. Pictures of a ball with different layers made of different materials are taken. The results show a clear structure and density resolution.
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| 关 键 词： | 射线照相 电子束 激光 尾场 应用 等离子体通道 结构观察 电子加速器 |
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