极端紫外线
光学
激光器
等离子体
辐射
芯(光纤)
紫外线
镍
紫外线辐射
物理
材料科学
核物理学
化学
放射化学
冶金
作者
Siqi He,Qi Min,Yanhong Wu,Xingbang Liu,Chaowei He,Shiquan Cao,Qikun Pan,Jin Guo,Fei Chen,Denghong Zhang,Maogen Su,Chenzhong Dong
出处
期刊:Optics Express
[The Optical Society]
日期:2024-04-23
卷期号:32 (10): 17088-17088
摘要
The non-uniformity and transient nature of laser-produced plasma are critical factors that affect the analysis of the extreme ultraviolet spectra of highly charged ions and the diagnosis of plasma states. This paper systematically investigates the characteristics of extreme ultraviolet radiation and the hydrodynamic evolution of laser-produced nickel plasmas from two perspectives: high-spatio-temporal-resolution extreme-ultraviolet spectroscopic measurement and radiation hydrodynamics simulation. The consistency between the four-band experimental spectra and their theoretically simulated spectra confirms the accuracy of the atomic structure parameters and plasma state parameters. We also analyze the significant contribution of the 3d-4f double-excited state radiation to the spectral profile and discuss the influence of the self-absorption caused by plasma opacity on the characteristics of extreme ultraviolet radiation. The findings are crucial for accurately understanding the characteristics of extreme ultraviolet radiation, the hydrodynamic evolution, and the application of medium- and high-Z laser-produced plasma as a pulsed short-wavelength light source.
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