Comment on ``Stark shift and width of x-ray lines from highly charged ions in dense plasmas''

Comment on “Stark shift and width of x-ray lines from highly charged ions in dense plasmas”

T. N. Chang and Xiang Gao

Phys. Rev. A 105, 056801 – Published 26 May 2022

Abstract

We point out in this Comment a misleading remark made by Gu and Beiersdorfer [Phys. Rev. A 101, 032501 (2020)] that the Debye-Hückel (DH) model “performs rather poorly” compared with the ion sphere model is due to their questionable use of the Debye length by assuming the same mobility for the plasma electrons and ions. Actually, our recent works based on a judicious application of the DH approximation, which meets the spatial and temporal criteria, have led to good agreements with all the available line shift experimental measurements on $α$ and $β$ emission lines of He-like ions.

Received 28 January 2022
Accepted 10 May 2022

DOI:https://doi.org/10.1103/PhysRevA.105.056801

Physics Subject Headings (PhySH)

Electronic structure of atoms & molecules Stark effect

Atomic, Molecular & OpticalPlasma Physics

Authors & Affiliations

T. N. Chang ^1,* and Xiang Gao ^2,3,†

¹Department of Physics, University of Southern California, Los Angeles, California 90089-0484, USA
²Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
³Beijing Computational Science Research Center, Beijing 100193, China

^*tnchang@usc.edu
^†xgao@csrc.ac.cn

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Original Article

Stark shift and width of x-ray lines from highly charged ions in dense plasmas

M. F. Gu and P. Beiersdorfer

Phys. Rev. A 101, 032501 (2020)

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Issue

Vol. 105, Iss. 5 — May 2022

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