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Accurate Multiconfiguration Hartree-fock Calculations of Oscillator-strengths In Light-atoms - the Boron (b-ii) Line At 1362 Angstrom

Godefroid, M; Olsen, J; Jonsson, P and Fischer, Charlotte LU (1995) In Astrophysical Journal 450(1). p.473-476
Abstract
A new method to deal with nonorthogonalities in transition calculations has been implemented and tested. Large-scale transition calculations using the multiconfiguration Hartree-Fock (MCHF) method have been performed for the resonance line of B II at 1362 Angstrom. In these calculations the orbital sets of the initial and final-state wavefunctions have not been assumed to be equal but have been optimized independently. The calculated weighted multiplet oscillator strength gf= 0.999 has an estimated uncertainty of less than 0.5%. Together with the previously calculated isotope shift and hyperfine structure (Jonsson, Johansson, and Froese Fischer 1994), all the important atomic parameters needed for a detailed modeling of the B II resonance... (More)
A new method to deal with nonorthogonalities in transition calculations has been implemented and tested. Large-scale transition calculations using the multiconfiguration Hartree-Fock (MCHF) method have been performed for the resonance line of B II at 1362 Angstrom. In these calculations the orbital sets of the initial and final-state wavefunctions have not been assumed to be equal but have been optimized independently. The calculated weighted multiplet oscillator strength gf= 0.999 has an estimated uncertainty of less than 0.5%. Together with the previously calculated isotope shift and hyperfine structure (Jonsson, Johansson, and Froese Fischer 1994), all the important atomic parameters needed for a detailed modeling of the B II resonance line in high-resolution astrophysical spectra are now available with high accuracy. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Astrophysical Journal
volume
450
issue
1
pages
473 - 476
publisher
University of Chicago Press
external identifiers
  • Scopus:0039685084
ISSN
0004-637X
DOI
10.1086/176157
language
English
LU publication?
yes
id
2f8a7e63-e69a-4eae-88a6-6aa15c4f0cf8 (old id 2258213)
date added to LUP
2012-02-22 21:21:30
date last changed
2017-01-01 07:48:51
@article{2f8a7e63-e69a-4eae-88a6-6aa15c4f0cf8,
  abstract     = {A new method to deal with nonorthogonalities in transition calculations has been implemented and tested. Large-scale transition calculations using the multiconfiguration Hartree-Fock (MCHF) method have been performed for the resonance line of B II at 1362 Angstrom. In these calculations the orbital sets of the initial and final-state wavefunctions have not been assumed to be equal but have been optimized independently. The calculated weighted multiplet oscillator strength gf= 0.999 has an estimated uncertainty of less than 0.5%. Together with the previously calculated isotope shift and hyperfine structure (Jonsson, Johansson, and Froese Fischer 1994), all the important atomic parameters needed for a detailed modeling of the B II resonance line in high-resolution astrophysical spectra are now available with high accuracy.},
  author       = {Godefroid, M and Olsen, J and Jonsson, P and Fischer, Charlotte},
  issn         = {0004-637X},
  language     = {eng},
  number       = {1},
  pages        = {473--476},
  publisher    = {University of Chicago Press},
  series       = {Astrophysical Journal},
  title        = {Accurate Multiconfiguration Hartree-fock Calculations of Oscillator-strengths In Light-atoms - the Boron (b-ii) Line At 1362 Angstrom},
  url          = {http://dx.doi.org/10.1086/176157},
  volume       = {450},
  year         = {1995},
}