4.6 Article

Conversion efficiency of multi-keV L-shell-band X-ray emission

期刊

OPTICS EXPRESS
卷 29, 期 20, 页码 31726-31738

出版社

OPTICAL SOC AMER
DOI: 10.1364/OE.434527

关键词

-

类别

资金

  1. National Natural Science Foundation of China [11575168, 11175167]

向作者/读者索取更多资源

This study investigated the influence of foil thickness, laser pulse width, and laser intensity on the X-ray conversion efficiency of a sandwiched planar target, revealing that three-layer thin foils can provide an efficient multi-keV X-ray source but require careful optimization of laser parameters and foil thickness.
This study explored the influence of foil thickness, laser pulse width, and laser intensity to optimize the multi-keV X-ray conversion efficiency of a sandwiched (CH/Sn/CH) planar target under laser irradiation at the Shenguang II laser facility. The X-ray photon field values were measured using a set of elliptically bent crystal spectrometers and the conversion efficiencies (xi(x)) of photon energies were in the range of 3.7-4.3 key. The experimental results indicate that the X-ray yields of 3.7 to 4.3 keV radiation strongly depend on the laser pulse width, target thickness, and laser intensity. The results also demonstrate that three-layer thin foils can provide an efficient multi-keV X-ray source because they can change the distribution of emitted multi-keV X-rays and target dynamics versus nanosecond laser pulses to produce large, hot, and underdense plasma. However, the underdense plasma produced as a rarefaction wave causes the overdense plasma generated by the laser pulse to expand. Therefore, the laser parameters and foil thickness must be carefully optimized to produce an efficient 3.7 to 4.3 keV X-ray source. Otherwise, the rarefaction waves from both sides of the thin foil may suppress multi-key X-ray emission. This study represents an important advancement in the development of an efficient multi-keV L-shell-band X-ray source. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据