利用复合抛物面聚焦靶增强高能x射线成像

IF 1.6 3区物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS High Energy Density Physics Pub Date : 2022-03-01 DOI:10.1016/j.hedp.2022.100978

P.M. King , D. Rusby , A. Hannasch , N. Lemos , G. Tiwari , A. Pak , S. Kerr , G. Cochran , I. Pagano , G.J. Williams , S.F. Khan , M. Aufderheide , A. Kemp , S. Wilks , A. Macphee , F. Albert , B.M. Hegelich , M. Downer , M. Manuel , Z. Gavin , A. Mackinnon

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引用次数: 6

摘要

我们报告了在140 J, 150 fs激光系统上使用f/40聚焦光学器件的相对论激光等离子体实验中，使用复合抛物聚光器(CPC)与平面固体目标相比，MeV能量的弱致辐射x射线产生的增加。CPC增强靶的高能x射线产量比平面箔靶增加了3倍。这种x射线能谱的增强表明了一个面密度为20 g/cm2的图像质量指标(IQI)物体的放射成像的直接改善。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Enhancement of high energy X-ray radiography using compound parabolic concentrator targets

We report an increase in MeV energy bremsstrahlung x-ray production using compound parabolic concentrators (CPC) compared to flat solid targets during relativistic laser-plasma experiments on a 140 J, 150 fs laser system using an $f$ /40 focusing optic. CPC enhanced targets show a $> 3 \times$ increase in high energy x-ray production over planar foil targets. This enhancement in x-ray energy spectra shows a direct improvement in the radiography of an image quality indicator (IQI) object with a 20 g/cm $^{2}$ areal density.

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来源期刊

High Energy Density Physics PHYSICS, FLUIDS & PLASMAS-

CiteScore

4.20

自引率

6.20%

发文量

审稿时长

6-12 weeks

期刊介绍： High Energy Density Physics is an international journal covering original experimental and related theoretical work studying the physics of matter and radiation under extreme conditions. ''High energy density'' is understood to be an energy density exceeding about 1011 J/m3. The editors and the publisher are committed to provide this fast-growing community with a dedicated high quality channel to distribute their original findings. Papers suitable for publication in this journal cover topics in both the warm and hot dense matter regimes, such as laboratory studies relevant to non-LTE kinetics at extreme conditions, planetary interiors, astrophysical phenomena, inertial fusion and includes studies of, for example, material properties and both stable and unstable hydrodynamics. Developments in associated theoretical areas, for example the modelling of strongly coupled, partially degenerate and relativistic plasmas, are also covered.