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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
; ; ; ; and
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 University 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
2016-04-01 11:38:08
date last changed
2022-01-26 07:54:23
@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}},
  keywords     = {{stars : chemically peculiar; atomic data; atomic processes}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{433--440}},
  publisher    = {{Oxford University 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          = {{https://lup.lub.lu.se/search/files/2571417/2371283.pdf}},
  doi          = {{10.1046/j.1365-2966.2003.07107.x}},
  volume       = {{346}},
  year         = {{2003}},
}