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Radiography of a Kα X-ray source generated through ultrahigh picosecond laser–nanostructure target interaction [Cover Paper]

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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 \times 10-4.

广告组1.2 - 空间光调制器+DMD
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DOI:10.3788/COL201513.031001

所属栏目:Image processing

收稿日期:2014-10-08

录用日期:2014-12-22

网络出版日期:2015-02-24

作者单位    点击查看

Jian Wang:Department of Physics, Fudan University, Shanghai 210433, ChinaResearch Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
Zongqing Zhao:Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
Weihua He:Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
Bin Zhu:Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
Kegong Dong:Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
Yuchi Wu:Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
Tiankui Zhang:Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
Gao Niu:Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
Kainan Zhou:Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
Na Xie:Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
Weimin Zhou:Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
Yuqiu Gu:Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China

联系人作者:联系作者(498427431@qq.com)

备注:This work was supported by the National Science Foundation of China (Grant Nos. 1174259, 11175030, 11475030, and 10905051), the Science and Technology on Plasma Physics Laboratory (Grant No. 9140c680306120c68253), and the China Academy of Engineering Physics Foundation (Grant No. 2011B0102021).

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