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: 995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
Abstract
Laser-driven ultrafast X-ray sources are widely used for diagnostic radiography. However, there is a large divergence of fast electrons when they are generated by an intense short-pulse laser interacting with a foil target. We design a nanowire array target to achieve a more compact point X-ray source. Fast electrons are confined and guided by the nanowire array structure in order to generate a Kα source with a small spot size. In our work, the smallest measured source size is comparable to the laser spot size, while the conversion efficiency can reach 2.4×10 4.

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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