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Experimental radiative lifetimes for highly excited states and calculated oscillator strengths for lines of astrophysical interest in singly ionized cobalt (Co ii)

Quinet, P.; Fivet, V.; Palmeri, P.; Engström, L. LU ; Hartman, H. LU ; Lundberg, H. LU and Nilsson, H. LU (2016) In Monthly Notices of the Royal Astronomical Society 462(4). p.3912-3917
Abstract

This work reports new experimental radiative lifetimes and calculated oscillator strengths for transitions of astrophysical interest in singly ionized cobalt. More precisely, 19 radiative lifetimes in Co+ have been measured with the time-resolved laser-induced fluorescence technique using one- and two-step excitations. Out of these, seven belonging to the high lying 3d7(4F)4d configuration in the energy range 90 697-93 738 cm-1 are new, and the other 12 from the 3d7(4F)4p configuration with energies between 45 972 and 49 328 cm-1 are compared with previous measurements. In addition, a relativistic Hartree-Fock model including core-polarization effects has been... (More)

This work reports new experimental radiative lifetimes and calculated oscillator strengths for transitions of astrophysical interest in singly ionized cobalt. More precisely, 19 radiative lifetimes in Co+ have been measured with the time-resolved laser-induced fluorescence technique using one- and two-step excitations. Out of these, seven belonging to the high lying 3d7(4F)4d configuration in the energy range 90 697-93 738 cm-1 are new, and the other 12 from the 3d7(4F)4p configuration with energies between 45 972 and 49 328 cm-1 are compared with previous measurements. In addition, a relativistic Hartree-Fock model including core-polarization effects has been employed to compute transition rates. Supported by the good agreement between theory and experiment for the lifetimes, new reliable transition probabilities and oscillator strengths have been deduced for 5080 Co ii transitions in the spectral range 114-8744 nm.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Atomic data, Atomic processes
in
Monthly Notices of the Royal Astronomical Society
volume
462
issue
4
pages
6 pages
publisher
Wiley-Blackwell
external identifiers
  • scopus:84994479817
  • wos:000385231600033
ISSN
0035-8711
DOI
10.1093/mnras/stw1900
language
English
LU publication?
yes
id
ac0b30f1-369b-4cb3-9b1a-dc2b3c7682e9
date added to LUP
2016-11-28 13:45:02
date last changed
2017-04-23 04:55:26
@article{ac0b30f1-369b-4cb3-9b1a-dc2b3c7682e9,
  abstract     = {<p>This work reports new experimental radiative lifetimes and calculated oscillator strengths for transitions of astrophysical interest in singly ionized cobalt. More precisely, 19 radiative lifetimes in Co<sup>+</sup> have been measured with the time-resolved laser-induced fluorescence technique using one- and two-step excitations. Out of these, seven belonging to the high lying 3d<sup>7</sup>(<sup>4</sup>F)4d configuration in the energy range 90 697-93 738 cm<sup>-1</sup> are new, and the other 12 from the 3d<sup>7</sup>(<sup>4</sup>F)4p configuration with energies between 45 972 and 49 328 cm<sup>-1</sup> are compared with previous measurements. In addition, a relativistic Hartree-Fock model including core-polarization effects has been employed to compute transition rates. Supported by the good agreement between theory and experiment for the lifetimes, new reliable transition probabilities and oscillator strengths have been deduced for 5080 Co ii transitions in the spectral range 114-8744 nm.</p>},
  author       = {Quinet, P. and Fivet, V. and Palmeri, P. and Engström, L. and Hartman, H. and Lundberg, H. and Nilsson, H.},
  issn         = {0035-8711},
  keyword      = {Atomic data,Atomic processes},
  language     = {eng},
  month        = {11},
  number       = {4},
  pages        = {3912--3917},
  publisher    = {Wiley-Blackwell},
  series       = {Monthly Notices of the Royal Astronomical Society},
  title        = {Experimental radiative lifetimes for highly excited states and calculated oscillator strengths for lines of astrophysical interest in singly ionized cobalt (Co ii)},
  url          = {http://dx.doi.org/10.1093/mnras/stw1900},
  volume       = {462},
  year         = {2016},
}