Five-channel K-shell line emission imaging of Z-pinch plasmas

Yang Qingguo; Zhou Shaotong; Wu Yufen; Huang Xianbin; Xiao Shali

doi:10.3788/HPLPB20132507.1719

Volume 25 Issue 07

May 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(07): 1719-1722

Liu Wufeng, Huang Jijiang, Qiao Weimin, et al. Spot scanning control system for heavy ion therapy[J]. High Power Laser and Particle Beams, 2014, 26: 015105. doi: 10.3788/HPLPB201426.015105

Citation:

Yang Qingguo, Zhou Shaotong, Wu Yufen, et al. Five-channel K-shell line emission imaging of Z-pinch plasmas[J]. High Power Laser and Particle Beams, 2013, 25: 1719-1722. doi: 10.3788/HPLPB20132507.1719

Liu Wufeng, Huang Jijiang, Qiao Weimin, et al. Spot scanning control system for heavy ion therapy[J]. High Power Laser and Particle Beams, 2014, 26: 015105. doi: 10.3788/HPLPB201426.015105

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Five-channel K-shell line emission imaging of Z-pinch plasmas

doi: 10.3788/HPLPB20132507.1719

1.
Institute of Fluid Physics,CAEP,P.O.Box 919-109,Mianyang 621900,China;
2.
Key Laboratory of Opto-electronic Technology and System,Ministry of Education,Chongqing University,Chongqing 400044,China

Received Date: 2012-07-19
Rev Recd Date: 2012-12-13
Publish Date: 2013-05-02

Abstract

Abstract

A five-channel, in-chamber, X-ray imager employing five pinholes and five logarithmic spiral crystals is developed to obtain five monochromatic K-shell line images of the Al wire array Z-pinch plasmas on the Yang accelerator in one shot. This imager is compact, and easy to install and align. It has high energy resolution (less than 1.3 eV), and thus can easily distinguish the images of the He-like resonance line (1 598.4 eV) and its inter-combination line (1 588.3 eV), and the H-like resonance line (1 727.7 eV) and its inter-combination line (1729 eV) of Al from each other. Limited by the drive capability of the Yang accelerator, these images are constructed by several discrete hot-spots distributed around the axial line of the plasmas with cylindrical shape, where the temperature and density of electrons are higher than other regions. In addition, the intensity is higher and the area of hot-spots is wider for the He-like line images than for the H-like line images, which indicates that the electron temperature is not high enough so that the number of H-like ions is far less than that of He-like ions.
- Z-pinch,
- X-ray,
- plasma,
- line emission imaging,
- logarithmic spiral crystal

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