等离子体屏蔽和组态相互作用效应导致 L 壳层光电离截面和不透明度大幅增强
Plasma screening and configuration interaction effects induced large enhancement on L-shell photoionization cross sections and opacity
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中文总结 AI 辅助
该研究提出结合等离子体屏蔽和组态相互作用效应改进处理的不透明度模型，解释了铁、铬和镍不透明度相关差异，为太阳内部温度下 L 壳层不透明度测量提供系统解释，推动高能量密度等离子体中相关精确模拟。
中文摘要 AI 辅助
提出了一种结合等离子体屏蔽和组态相互作用（CI）效应改进处理的不透明度模型，预测在太阳内部温度下铁 L 壳层不透明度增强 25 - 30%。这源于等离子体屏蔽使光电离截面增强 14 - 17%，CI 使开放 L 壳层离子的光激发和光电离截面增强 10 - 20%。解释了理论与实验铁不透明度的长期差异，以及铬和镍不透明度增强较弱的原因。为太阳内部温度下 L 壳层不透明度测量提供系统解释，推动高能量密度等离子体中不透明度和辐射传输的精确模拟。
英文摘要
An opacity model that incorporates improved treatments of both plasma screening and configuration interaction (CI) effects is proposed, and a 25-30% enhancement on the iron L-shell opacity is predicted at solar interior temperatures. It is originated from the plasma screening induced 14-17% enhancement on the photoionization cross sections and the CI induced 10-20% enhancement on photoexcitation and photoionization cross sections for open L-shell ions. These explain the long-standing discrepancy between theoretical and experimental iron opacity [Nature 517, 56], and the relatively weaker enhancements on chromium and nickel opacity [Phys. Rev. Lett. 122, 235001] due to the sensitivity of these effects to the different L-shell electron population and plasma temperature/density. This letter provides the systematic interpretation of L-shell opacity measurements at solar interior temperatures, and advances the accurate simulation of opacity and radiative transport in high-energy-density plasma.
