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Theoretical and experimental lifetime and oscillator strength determination in singly ionized neodymium (Nd II)

Xu, Huailiang LU ; Svanberg, Sune LU ; Cowan, RD; Lefebvre, PH; Quinet, P and Biemont, E (2003) In Monthly Notices of the Royal Astronomical Society 346(2). p.433-440
Abstract
Radiative lifetime measurements were performed with time-resolved laser-induced fluorescence techniques for 24 levels of Nd II in the energy range 20 500- 32 500 cm(-1). For 17 levels, no previous experimental data exist. These results have allowed the testing of new theoretical calculations with the relativistic Hartree-Fock method taking configuration interactions and core-polarization effects into account, and a satisfying agreement has been found for this complex ion. A new set of calculated oscillator strengths, accurate within a few per cent for the strongest transitions, is presented for 107 lines of astrophysical interest appearing in the wavelength range 358.0-1100.0 nm. These results will be useful to evaluate abundance values of... (More)
Radiative lifetime measurements were performed with time-resolved laser-induced fluorescence techniques for 24 levels of Nd II in the energy range 20 500- 32 500 cm(-1). For 17 levels, no previous experimental data exist. These results have allowed the testing of new theoretical calculations with the relativistic Hartree-Fock method taking configuration interactions and core-polarization effects into account, and a satisfying agreement has been found for this complex ion. A new set of calculated oscillator strengths, accurate within a few per cent for the strongest transitions, is presented for 107 lines of astrophysical interest appearing in the wavelength range 358.0-1100.0 nm. These results will be useful to evaluate abundance values of neodymium in chemically peculiar stars in relation with cosmochronology. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
stars : chemically peculiar, atomic data, atomic processes
in
Monthly Notices of the Royal Astronomical Society
volume
346
issue
2
pages
433 - 440
publisher
OXFORD UNIV PRESS
external identifiers
  • wos:000186698700014
  • scopus:0345016366
ISSN
1365-2966
DOI
10.1046/j.1365-2966.2003.07107.x
language
English
LU publication?
yes
id
2fb3581f-be48-4e48-a6b3-a7d51cf5f1a1 (old id 294897)
date added to LUP
2007-09-24 09:57:28
date last changed
2018-09-09 03:31:15
@article{2fb3581f-be48-4e48-a6b3-a7d51cf5f1a1,
  abstract     = {Radiative lifetime measurements were performed with time-resolved laser-induced fluorescence techniques for 24 levels of Nd II in the energy range 20 500- 32 500 cm(-1). For 17 levels, no previous experimental data exist. These results have allowed the testing of new theoretical calculations with the relativistic Hartree-Fock method taking configuration interactions and core-polarization effects into account, and a satisfying agreement has been found for this complex ion. A new set of calculated oscillator strengths, accurate within a few per cent for the strongest transitions, is presented for 107 lines of astrophysical interest appearing in the wavelength range 358.0-1100.0 nm. These results will be useful to evaluate abundance values of neodymium in chemically peculiar stars in relation with cosmochronology.},
  author       = {Xu, Huailiang and Svanberg, Sune and Cowan, RD and Lefebvre, PH and Quinet, P and Biemont, E},
  issn         = {1365-2966},
  keyword      = {stars : chemically peculiar,atomic data,atomic processes},
  language     = {eng},
  number       = {2},
  pages        = {433--440},
  publisher    = {OXFORD UNIV PRESS},
  series       = {Monthly Notices of the Royal Astronomical Society},
  title        = {Theoretical and experimental lifetime and oscillator strength determination in singly ionized neodymium (Nd II)},
  url          = {http://dx.doi.org/10.1046/j.1365-2966.2003.07107.x},
  volume       = {346},
  year         = {2003},
}