光学学报, 2016, 36 (12): 1234001, 网络出版: 2016-12-14   

用于超热电子诊断的单色X射线成像技术

Monochromatic X-ray Imaging Technology for Diagnostics of Hot Electrons
作者单位
中国工程物理研究院激光聚变研究中心等离子体物理重点实验室, 四川 绵阳 621900
摘要
基于球面弯晶设计了一套二维分辨的单色成像系统,使用光学仿真软件对系统进行了成像模拟。对金网格进行了背光成像, 获得了8.048 keV的单色网格成像, 空间分辨率可达9 μm。在神光II(SG-II)升级激光装置上, 利用该成像系统成功获取了二维锥靶的Kα自发光单色图像。结果表明, 该成像系统能够胜任快点火物理实验中超热电子的诊断。
Abstract
A monochromatic imaging system with two-dimensional resolution is designed based on spherically bent crystals. Ray tracing simulation to the imaging process is conducted with the usage of optical simulation software. The backlit imaging to the Au meshes is conducted and a monochromatic mesh image with an energy of 8.048 keV and a spatial resolution of 9 μm is acquired. On the SG-II updated laser facility, with this imaging system, the Kα self-luminous monochromatic image of two-dimensional cone target is successfully acquired. The results show that this imaging system is capable of hot electrons diagnostics in the fast ignition experiments.
参考文献

[1] Tabak M, Hammer J, Glinsky M E, et al. Ignition and high gain with ultrapowerful lasers[J]. Physics of Plasmas,1994, 1(5): 1626-1634.

[2] Kodama R, Norreys P A, Mima K, et al. Fast heating of ultrahigh-density plasma as a step towards laser fusion ignition[J]. Nature, 2001, 412(23): 798-802.

[3] 张家泰, 何 斌, 贺贤土, 等. 激光聚变快点火机理研究[J]. 物理学报, 2001, 50(5): 921-925.

    Zhang Jiatai, He Bin, He Xiantu, et al. Study on the mechanism of the fast ignition in laser fusion[J]. Acta Physica Sinica, 2001, 50(5): 921-925.

[4] Morace A, Batani D. Spherically bent crystal for X-ray imaging of laser produced plasmas[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2010, 623(2): 797-800.

[5] Koch J A, Landen O L, Barbee T W, et al. High-energy X-ray microscopy techniques for laser-fusion plasma research at the National Ignition Facility[J]. Applied Optics, 1998, 37(10): 1784-1795.

[6] Sinars D B, Bennett G R, Wenger D F, et al. Evaluation of bent-crystal X-ray backlighting and microscopy techniques for the Sandia Z machine[J]. Applied Optics, 2003, 42(19): 4059-4071.

[7] Stoeckl C, Fiksel G, Guy D, et al. A spherical crystal imager for OMEGA EP[J]. Review of Scientific Instruments, 2012, 83: 033107.

[8] Theobald W, Solodov A A, Stoeckl C, et al. Time-resolved compression of a capsule with a cone to high density for fast-ignition laser fusion[J]. Nature Communication, 2014, 5: 5785.

[9] Casey D T, Woods D T, Smalyuk V A, et al. Performance and mix measurements of indirect drive Cu-doped be implosions[J]. Physical Review Letters, 2015, 114(20): 205002.

[10] Chawla S, Wei M S, Mishra R, et al. Effect of target material on fast electron transport and resistive collimation[J]. Physical Review Letters, 2013, 110(02): 025001.

[11] Hall G N, Burdiak G C, Suttle L, et al. Monochromatic radiography of high energy density physics experiments on the MAGPIE generator[J]. Review of Scientific Instruments, 2014, 85(11): 11D608.

[12] Akli K U, Key M H, Chung H K, et al. Temperature sensitivity of Cu Kα imaging efficiency using a spherical Bragg reflecting crystal[J]. Physics of Plasmas, 2007, 14(2): 023102.

[13] Chen B, Yang Z H, Wei M X, et al. Implosion dynamics measurements by monochromatic X-ray radiography in inertial confinement fusion[J]. Review of Plasmas, 2014, 21(12): 122705.

[14] Liu L F, Xiao S L, Qian J Y, et al. X-ray backlight imaging in Z-pinch[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2012, 684(21): 93-96.

[15] 阳庆国, 李泽仁, 彭其先, 等. 激光驱动X射线单色背光照相系统优化设计[J]. 强激光与粒子束, 2008, 20(12): 1983-1988.

    Yang Qingguo, Li Zeren, Peng Qixian, et al. Optimum design of laser-driven-monochromatic X-ray backlighting system[J]. High Power Laser and Particle Beams, 2008, 20(12): 1983-1988.

[16] 刘利锋, 肖沙里, 毋玉芬, 等. 基于石英球面弯曲晶体的X射线成像研究[J]. 中国激光, 2011, 38(8): 0815001.

    Liu Lifeng, Xiao Shali, Wu Yufen, et al. Study of X-ray backlight imaging based on spherically bent quartz crystal[J]. Chinese J Lasers, 2011, 38(8): 0815001.

[17] 鲁 建, 肖沙里, 阳庆国, 等. 铝丝阵Z箍缩电子温度径向轮廓研究[J]. 中国激光, 2012, 39(8): 0815001.

    Lu Jian, Xiao Shali, Yang Qingguo, et al. Electron temperature radial profile research of aluminum wire-array Z-pinch[J]. Chinese J Lasers, 2012, 39(8): 0815001.

张强强, 魏来, 杨祖华, 钱凤, 陈勇, 曹磊峰. 用于超热电子诊断的单色X射线成像技术[J]. 光学学报, 2016, 36(12): 1234001. Zhang Qiangqiang, Wei Lai, Yang Zuhua, Qian Feng, Chen Yong, Cao Leifeng. Monochromatic X-ray Imaging Technology for Diagnostics of Hot Electrons[J]. Acta Optica Sinica, 2016, 36(12): 1234001.

本文已被 2 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!