The Rydberg atom-atom collisions: Chemi-ionization cross-sections and rate coefficients in alkali-metal astrophysical and low-temperature laboratory plasmas

被引：0
作者：
Sreckovic, Vladimir A. [1 ]
Ignjatovic, Ljubinko M. [1 ]
Dimitrijevic, Milan S. [2 ,3 ]
Vujcic, Veljko [2 ]
Malovic, Miodrag [4 ]
Jevremovic, Darko [2 ]
Bezuglov, Nikolai N. [5 ,6 ]
Klyucharev, Andrey N. [6 ]
机构：
[1] Univ Belgrade, Inst Phys Belgrade, Pregrevica 118, Belgrade 11080, Serbia
[2] Astron Observ, Volgina 7, Belgrade 11060, Serbia
[3] Univ PSL, Sorbonne Univ, Observ Paris, CNRS, F-92195 Meudon, France
[4] Univ Belgrade, Innovat Ctr Fac Technol & Met, Karnegijeva 4, Belgrade 11120, Serbia
[5] Univ Latvia, Inst Atom Phys & Spect, Jelgavas str 3, LV-1004 Riga, Latvia
[6] State Univ, 7-9 Univ Skaya Nab, St Petersburg 199034, Russia
来源：
ADVANCES IN SPACE RESEARCH | 2023年 / 71卷 / 02期
关键词：
Radiative processes; Atomic and molecular data; Molecular ions; Absorption; Astrophysical plasmas; Spectroscopy; Plasma diagnostics; PENNING IONIZATION; SLOW COLLISIONS; SODIUM; POTASSIUM; GASES;
D O I：
10.1016/j.asr.2022.04.069
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
In this manuscript, the chemi-ionization (CI) processes in atom - Rydberg atom collisions are examined. We obtained the crosssections, as well as rate coefficients for CI processes in potassium and sodium collisions for principal quantum numbers 5 n 25 in the 500 K T 1500 K temperature region. The presented data could be useful for the improvement of analysis and modelling of weakly ionized layers of different atmospheres and cosmic objects where these and other CI processes could change excited state populations and the free electron density, consequently affecting the optical characteristics. (c) 2022 COSPAR. Published by Elsevier B.V. All rights reserved.
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页码：1245 / 1251
页数：7
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