Theoretical study of electron-impact broadening for highly charged Ar XV ion lines  

作　　者：吴超 高翔 朱宇豪 韩小英 段斌 孟举 张松斌 颜君 吴勇 王建国 Chao Wu;Xiang Gao;Yu-Hao Zhu;Xiao-Ying Han;Bin Duan;Ju Meng;Song-Bin Zhang;Jun Yan;Yong Wu;Jian-Guo Wang(National Key Laboratory of Computational Physics,Institute of Applied Physics and Computational Mathematics,Beijing 100088,China;HEDPS,Center for Applied Physics and Technology,Peking University,Beijing 100084,China;School of Physics and Information Technology,Shaanxi Normal University,Xi’an 710119,China;School of Science,Xi’an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]National Key Laboratory of Computational Physics,Institute of Applied Physics and Computational Mathematics,Beijing 100088,China [2]HEDPS,Center for Applied Physics and Technology,Peking University,Beijing 100084,China [3]School of Physics and Information Technology,Shaanxi Normal University,Xi’an 710119,China [4]School of Science,Xi’an University of Architecture and Technology,Xi’an 710055,China

出　　处：《Chinese Physics B》2023年第5期49-56,共8页中国物理B（英文版）

基　　金：the National Natural Science Foundation of China(Grant Nos.11934004,U1832201,and 12241410);the Science Challenge Project(Grant No.TZ2016005);the CAEP Foundation(Grant No.CX2019022);the Special Innovation Project for National Defense。

摘　　要：Spectral line widths produced by collisions between charged particles and emitters are of special interest for precise plasma spectroscopy.The highly charged Ar XV ion is demonstrated to have strong intrashell electron interactions,which manifest as an atomic system with many resonance structures,due to the quasi-degeneracy of orbital energies.In this paper we use the relativistic R-matrix method to investigate the electron-impact broadening of highly charged Ar XV ion spectral lines under the impact approximation.It is found that the results considering resonance structures are significantly different from those of the distorted wave approach.Furthermore,we propose a new empirical formula with a correction term to take into account the effect of resonances for electron-impact widths over a relatively wide range of plasma conditions.The corresponding fitting parameters of the new empirical formula for all 47 calculated transitions are also given with an estimated accuracy within 1%,which should be convenient for practical applications.The dataset that supported the findings of this study is available in Science Data Bank,with the link https://doi.org/10.57760/sciencedb.j00113.00101.

关 键 词：highly charged ions electron-impact broadening empirical formula 

分 类 号：O53[理学—等离子体物理]