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Bremsstrahlung emission from high power laser interactions with constrained targets for industrial radiography

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摘要

Laser-solid interactions are highly suited as a potential source of high energy X-rays for non-destructive imaging. A bright, energetic, x-ray pulse can be driven from a small source, making it ideal for high resolution x-ray radiography. By limiting the lateral dimensions of the target we are able to confine the regions over which x-rays are produced, enabling imaging with enhanced resolution and contrast. Using constrained targets we demonstrate experimentally a (20 ± 3) μm x-ray source, improving the image quality compared to unconstrained foil targets. Modelling demonstrates that a larger sheath field envelope around the perimeter of the constrained targets increases the proportion of electron current that recirculates through the target, driving a brighter source of x-rays.

Newport宣传-MKS新实验室计划
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作者单位:

    Rutherford Appleton Laboratory
    Interface Analysis Centra
    University of Strathclyde
    Institute of Physics, The Chinese Academy of Sciences
    Rutherford Appleton Laboratory
    Rutherford Appleton Laboratory
    Science and Technology Facilities Council
    Queen\''s University Belfast
    Interface Analysis Centra
    Rutherford Appleton Laboratory
    Science and Technology Facilities Council
    Institute of Physics, The Chinese Academy of Sciences
    University of Strathclyde

引用该论文

Armstrong Chris,Brenner Ceri,Jones Chris,Rusby Dean,Davidson Zoe,Zhang Yihang,Wragg Joeseph,Richards Sion,Spindloe Christopher,Kar Satyabrata,Scott Tom,Notley Margaret,Oliveira Pedro,Clarke Rob,Li Yutong,McKenna Paul,Neely David. Bremsstrahlung emission from high power laser interactions with constrained targets for industrial radiography[J].High Power Laser Science and Engineering,,():.