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X射线相衬成像法在线表征冷冻靶技术
引用本文:刘元琼,黎军,王凯,林伟,马坤全,雷海乐,谢端.X射线相衬成像法在线表征冷冻靶技术[J].强激光与粒子束,2013,25(3):620-626.
作者姓名:刘元琼  黎军  王凯  林伟  马坤全  雷海乐  谢端
作者单位:1.中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621 900
基金项目:国家自然科学基金项目(51006093)
摘    要:阐述了冷冻靶类球面物体X射线相衬成像机理;Tracepro软件模拟研究证明了X射线相衬成像法能用于冷冻靶燃料层参数的表征;研制了在线表征冷冻靶的X射线相衬成像实验装置,利用该装置开展了二乙烯基苯泡沫球壳及实际氘氘冷冻靶的X射线相衬成像实验研究,获得了玻璃微球内氘氘冷冻层X射线相衬图像,成像分辨力达1.5 m;利用X射线相衬成像法可同时表征烧蚀球壳及冷冻燃料层,为惯性约束聚变实验提供冷冻靶参数。

关 键 词:X射线相衬成像    冷冻燃料层    表征    模拟    折射
收稿时间:2012-06-21

Characterization of cryogenic targets using X-ray phase contrast imaging
Liu Yuanqiong,Li Jun,Wang Kai,Lin Wei,Ma Kunquan,Lei Haile,Xie Duan.Characterization of cryogenic targets using X-ray phase contrast imaging[J].High Power Laser and Particle Beams,2013,25(3):620-626.
Authors:Liu Yuanqiong  Li Jun  Wang Kai  Lin Wei  Ma Kunquan  Lei Haile  Xie Duan
Institution:1.Research Center of Laser Fusion,CAEP,P.O.Box 919-987,Mianyang 621900,China
Abstract:A brief review of X-ray phase contrast imaging theory for spherical objects is given. Using Tracepro, simulated X-ray phase-contrast images of SiO2/DD cryogenic capsules are produced. The ability of phase contrast enhanced X-ray imaging for characterization of cryogenic fuel layers inside ablator shells has been proven with the simulation result. X-ray phase contrast imaging equipment has been established for characterization of cryogenic targets, with which imaging experiments for low density divinyl benzene foam shells and SiO2/DD cryogenic capsules have been carried out, and phase contrast images of cryogenic DD fuel layers in SiO2 capsules are obtained, with a resolution up to 1.5 m. Ablator and cryogenic fuel layers can be simultaneously characterized by X-ray phase contrast imaging.
Keywords:
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