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An important criterion for reliable multi-monochromatic x-ray imager diagnostics and its impact on the reconstructed images

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Abstract

Temperature and density asymmetry diagnosis is critical to advance inertial confinement fusion (ICF) science. A multimonochromatic x-ray imager, MMI, records the spectral signature from an ICF implosion core with time resolution, 2D spatial resolution and spectral resolution. While narrow-band images and 2D space-resolved spectra from the MMI data constrain the temperature and the density spatial structure of the core, the accuracy of the images and the spectra highly depends on the quality of the MMI data and the processing tools. Here, we synthetically investigate the criterion for reliable MMI diagnostics and its effects on the accuracy of the reconstructed images. The pinhole array tilt determines the object spatial sampling efficiency and the minimum reconstruction width, w. When the spectral width associated with w is significantly narrower than the spectral linewidth, the line images reconstructed from the MMI data become reliable. The MMI setup has to be optimized for every application to meet this criterion for reliable ICF diagnostics.

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DOI:10.1017/hpl.2015.25

基金项目:This work was supported by DOE/NLUF grant nos. DENA0000859 and DE-NA0002267, and LLNL.

收稿日期:2015-04-10

录用日期:2015-06-13

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作者单位    点击查看

T. Nagayama:Physics Department, University of Nevada, Reno, NV 89557, USA
R.C. Mancini:Physics Department, University of Nevada, Reno, NV 89557, USA
D. Mayes:Physics Department, University of Nevada, Reno, NV 89557, USA
R. Tommasini:Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
R. Florido:Departamento de Física, Universidad de Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain

联系人作者:T. Nagayama(tnnagay@sandia.gov)

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引用该论文

T. Nagayama, R.C. Mancini, D. Mayes, R. Tommasini, and R. Florido, "An important criterion for reliable multi-monochromatic x-ray imager diagnostics and its impact on the reconstructed images," High Power Laser Science and Engineering 3(3), 1-7 (2015)

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