
Please use this identifier to cite or link to this item:
https://dspace.ffh.bg.ac.rs/handle/123456789/1298
Title: | The influence of (n - n<sup>′</sup>)-mixing processes in He<sup>*</sup> (n) + He (1 s<sup>2</sup>) collisions on He<sup>*</sup> (n) atoms' populations in weakly ionized helium plasmas | Authors: | Mihajlov, A. A. Ignjatović, Ljubiša Srećković, V. A. Djurić, Z. |
Keywords: | Atomic and molecular collisions;Rydberg states | Issue Date: | 1-Mar-2008 | Journal: | Journal of Quantitative Spectroscopy and Radiative Transfer | Abstract: | The results of semi-classical calculations of rate coefficients of (n - n′)-mixing processes due to collisions of Rydberg atoms He* (n) with He (1 s2) atoms are presented. It is assumed that these processes are caused by the resonant energy exchange within the electron component of He* (n) + He collision system. The method is realized through the numerical simulation of the (n - n′)-mixing processes, and is applied for calculations of the corresponding rate coefficients. The calculations are performed for the principal quantum numbers n, n′ in ranges 4 ≤ n < n′ ≤ 10, and the atom and electron temperatures, Ta, Te, in domains 5000 K ≤ Ta ≤ Te ≤ 20 000 K. It is shown that the (n - n′)-mixing processes can significantly influence the populations of Rydberg atoms in non-equilibrium weakly ionized helium plasmas with ionization degree ∼ 10- 4. Therefore, these processes have to be included in the appropriate models of such plasmas. © 2007 Elsevier Ltd. All rights reserved. |
URI: | https://dspace.ffh.bg.ac.rs/handle/123456789/1298 | ISSN: | 0022-4073 | DOI: | 10.1016/j.jqsrt.2007.09.005 |
Appears in Collections: | Journal Article |
Show full item record
SCOPUSTM
Citations
11
checked on Oct 9, 2025
Page view(s)
22
checked on Oct 17, 2025
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.