Chinese Optics Letters, 2015, 13 (3): 031001, Published Online: Sep. 25, 2018   

Radiography of a Kα X-ray source generated through ultrahigh picosecond laser–nanostructure target interaction Download: 1005次

Author Affiliations
1 Department of Physics, Fudan University, Shanghai 210433, China
2 Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
Figures & Tables

Fig. 1. (a) Schematic overview of the experiment setup. L–N means the laser is interacting with the nanowire structure directly. L–S means the laser is interacting with the substrate; (b) scanning electron microscopy image of the nanowire array target.

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Fig. 2. (a) Spectrum of K-shell lines obtained for 94.8 J laser incidence on the target with 20 μm nanowires; (b) dependence of the total count of Kα on the laser energy for the target with 20 μm nanowires.

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Fig. 3. (a) Original Kα image for a nanowire array target with 10 μm long nanowires and a 5 μm thick substrate. Corresponding laser peak intensity is 1×1019W/cm2; (b) restored image from (a).

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Fig. 4. (a) Stack of 1D slits (50, 100, 200, and 300 μm) on a 50 μm thick Ta substrate; (b) horizontal line-outs for the point projection radiography.

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Table1. Laser Energy versus FWHM of the PSF and CE

Laser Energy (J)FWHM of the Point Spread Function (μm)CE
1943.82.4×104
7548.91.2×104
9446.41.6×104

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剑 王, 宗清 赵, 卫华 何, 斌 朱, 克攻 董, 玉迟 吴, 天奎 张, 牛 高, 凯南 周, 娜 谢, 维民 周, 渝秋 谷. Radiography of a Kα X-ray source generated through ultrahigh picosecond laser–nanostructure target interaction[J]. Chinese Optics Letters, 2015, 13(3): 031001.

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