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Systematic studies of highly excited Rydberg states in ions with two valance electrons

Andersson, Martin ; Brage, Tomas LU ; Hutton, Roger ; Kink, Ilmar and Engström, Lars LU (2006) In Journal of Physics B: Atomic, Molecular and Optical Physics 39(12). p.2815-2826
Abstract
A method, based on the multiconfiguration Hartree-Fock approach, for ab initio calculations of Rydberg states has been developed. The method has been tested for a number of highly excited Rydberg states, with quantum numbers l = 4 - 8 and n <= 9, in Mg-like and Be-like ions. The results are compared with Hartree-Fock calculations to investigate the influence of correlation and, to a lesser extent, relativistic effects. The theoretical spectra for Cl VI and the lifetimes of the 2s6g-levels in O V are in excellent agreement with experimental results. More limited calculations have also been done for some Rydberg series in S V and Ar VII to illustrate the changing influence of perturbers along the isoelectronic sequence. The difficulties... (More)
A method, based on the multiconfiguration Hartree-Fock approach, for ab initio calculations of Rydberg states has been developed. The method has been tested for a number of highly excited Rydberg states, with quantum numbers l = 4 - 8 and n <= 9, in Mg-like and Be-like ions. The results are compared with Hartree-Fock calculations to investigate the influence of correlation and, to a lesser extent, relativistic effects. The theoretical spectra for Cl VI and the lifetimes of the 2s6g-levels in O V are in excellent agreement with experimental results. More limited calculations have also been done for some Rydberg series in S V and Ar VII to illustrate the changing influence of perturbers along the isoelectronic sequence. The difficulties of using isoelectronic extrapolation/interpolation in making predictions for this kind of systems are discussed. (Less)
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publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physics B: Atomic, Molecular and Optical Physics
volume
39
issue
12
pages
2815 - 2826
publisher
IOP Publishing
external identifiers
  • wos:000239306700018
  • scopus:33745111223
ISSN
0953-4075
DOI
10.1088/0953-4075/39/12/015
language
English
LU publication?
yes
id
3397a88e-919f-4a19-a355-6b4e013f204b (old id 399459)
date added to LUP
2016-04-01 16:27:38
date last changed
2021-02-17 03:02:15
@article{3397a88e-919f-4a19-a355-6b4e013f204b,
  abstract     = {A method, based on the multiconfiguration Hartree-Fock approach, for ab initio calculations of Rydberg states has been developed. The method has been tested for a number of highly excited Rydberg states, with quantum numbers l = 4 - 8 and n &lt;= 9, in Mg-like and Be-like ions. The results are compared with Hartree-Fock calculations to investigate the influence of correlation and, to a lesser extent, relativistic effects. The theoretical spectra for Cl VI and the lifetimes of the 2s6g-levels in O V are in excellent agreement with experimental results. More limited calculations have also been done for some Rydberg series in S V and Ar VII to illustrate the changing influence of perturbers along the isoelectronic sequence. The difficulties of using isoelectronic extrapolation/interpolation in making predictions for this kind of systems are discussed.},
  author       = {Andersson, Martin and Brage, Tomas and Hutton, Roger and Kink, Ilmar and Engström, Lars},
  issn         = {0953-4075},
  language     = {eng},
  number       = {12},
  pages        = {2815--2826},
  publisher    = {IOP Publishing},
  series       = {Journal of Physics B: Atomic, Molecular and Optical Physics},
  title        = {Systematic studies of highly excited Rydberg states in ions with two valance electrons},
  url          = {https://lup.lub.lu.se/search/ws/files/4679572/2425874.pdf},
  doi          = {10.1088/0953-4075/39/12/015},
  volume       = {39},
  year         = {2006},
}