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Hyperfine induced intensity redistribution in In II

Grumer, Jon LU ; Andersson, Martin LU and Brage, Tomas LU (2010) In Journal of Physics B: Atomic, Molecular and Optical Physics 43(7).
Abstract
We present a theoretical investigation of the hyperfine structure of the 5s5d D-3(2)-5s4f F-3(2,3)0 transitions in In II. Earlier work has failed in determining hyperfine constants for the upper levels of these transitions. We show that this is due to strong off-diagonal hyperfine interaction, which not only changes the position of the individual hyperfine lines but also introduces large intensity redistributions among the different hyperfine levels. We present hyperfine dependent gf-values and show that off-diagonal hyperfine interaction reduces some of the gf-values by two orders of magnitude, while others are increased by up to more than a factor of 6. We also discuss the influence on the hyperfine structure of an accurate... (More)
We present a theoretical investigation of the hyperfine structure of the 5s5d D-3(2)-5s4f F-3(2,3)0 transitions in In II. Earlier work has failed in determining hyperfine constants for the upper levels of these transitions. We show that this is due to strong off-diagonal hyperfine interaction, which not only changes the position of the individual hyperfine lines but also introduces large intensity redistributions among the different hyperfine levels. We present hyperfine dependent gf-values and show that off-diagonal hyperfine interaction reduces some of the gf-values by two orders of magnitude, while others are increased by up to more than a factor of 6. We also discuss the influence on the hyperfine structure of an accurate representation of the level-splitting of the 5s4f configuration. We show that the hyperfine interaction in F-3(3)0 and F-1(3)0 is very hard to determine accurately even in a large-scale calculation, and we derive a semi-empirical method for adjusting our results using an experimentally known, diagonal hyperfine constant for 5s4f F-1(3)0. The resulting theoretical synthetic spectra reproduce the experimental values to high accuracy and facilitate the identification of all observed lines. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physics B: Atomic, Molecular and Optical Physics
volume
43
issue
7
publisher
IOP Publishing
external identifiers
  • wos:000275756100013
  • scopus:77949677270
ISSN
0953-4075
DOI
10.1088/0953-4075/43/7/074012
language
English
LU publication?
yes
id
5f67121f-d2e7-4a35-9f1b-dc08132f2d8b (old id 1587973)
date added to LUP
2010-04-22 13:06:27
date last changed
2018-05-29 11:14:23
@article{5f67121f-d2e7-4a35-9f1b-dc08132f2d8b,
  abstract     = {We present a theoretical investigation of the hyperfine structure of the 5s5d D-3(2)-5s4f F-3(2,3)0 transitions in In II. Earlier work has failed in determining hyperfine constants for the upper levels of these transitions. We show that this is due to strong off-diagonal hyperfine interaction, which not only changes the position of the individual hyperfine lines but also introduces large intensity redistributions among the different hyperfine levels. We present hyperfine dependent gf-values and show that off-diagonal hyperfine interaction reduces some of the gf-values by two orders of magnitude, while others are increased by up to more than a factor of 6. We also discuss the influence on the hyperfine structure of an accurate representation of the level-splitting of the 5s4f configuration. We show that the hyperfine interaction in F-3(3)0 and F-1(3)0 is very hard to determine accurately even in a large-scale calculation, and we derive a semi-empirical method for adjusting our results using an experimentally known, diagonal hyperfine constant for 5s4f F-1(3)0. The resulting theoretical synthetic spectra reproduce the experimental values to high accuracy and facilitate the identification of all observed lines.},
  author       = {Grumer, Jon and Andersson, Martin and Brage, Tomas},
  issn         = {0953-4075},
  language     = {eng},
  number       = {7},
  publisher    = {IOP Publishing},
  series       = {Journal of Physics B: Atomic, Molecular and Optical Physics},
  title        = {Hyperfine induced intensity redistribution in In II},
  url          = {http://dx.doi.org/10.1088/0953-4075/43/7/074012},
  volume       = {43},
  year         = {2010},
}