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Systematic Studies of N IV Transitions of Astrophysical Importance

Fleming, J; Brage, Tomas LU ; Bell, KL; Vaeck, N; HIibbert, A; Godefroid, MR and Fischer, CF (1995) In Astrophysical Journal 455(2). p.758-768
Abstract
E1, M2, M1 and E2 rates of transitions between n = 2 levels of N IV have been calculated using the tw independent codes CIV3 and MCHF. Convergence of each of the approaches has been studied and comparisons made as the complexity of the calculations increases to include valence, core-valence and core-core correlation. The agreement between the two methods is sufficiently good to allow us to set quite narrow uncertainty bars. For the S-1-P-1 degrees resonance line, our recommended f-value is 0.609 with an estimated uncertainty of 0.002, while our recommended A-value for the S-1(0)-P-3(1) degrees intercombination line is 580 s(-1) with an estimated uncertainty of 10 s(-1).
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ATOMIC DATA, ATOMIC PROCESSES
in
Astrophysical Journal
volume
455
issue
2
pages
758 - 768
publisher
University of Chicago Press
external identifiers
  • wos:A1995TK12500036
  • scopus:11944257603
ISSN
0004-637X
DOI
10.1086/176621
language
English
LU publication?
no
id
5796f12a-284c-44c7-aa39-100e000487ee (old id 3918943)
date added to LUP
2013-07-08 14:09:10
date last changed
2017-01-01 07:10:28
@article{5796f12a-284c-44c7-aa39-100e000487ee,
  abstract     = {E1, M2, M1 and E2 rates of transitions between n = 2 levels of N IV have been calculated using the tw independent codes CIV3 and MCHF. Convergence of each of the approaches has been studied and comparisons made as the complexity of the calculations increases to include valence, core-valence and core-core correlation. The agreement between the two methods is sufficiently good to allow us to set quite narrow uncertainty bars. For the S-1-P-1 degrees resonance line, our recommended f-value is 0.609 with an estimated uncertainty of 0.002, while our recommended A-value for the S-1(0)-P-3(1) degrees intercombination line is 580 s(-1) with an estimated uncertainty of 10 s(-1).},
  author       = {Fleming, J and Brage, Tomas and Bell, KL and Vaeck, N and HIibbert, A and Godefroid, MR and Fischer, CF},
  issn         = {0004-637X},
  keyword      = {ATOMIC DATA,ATOMIC PROCESSES},
  language     = {eng},
  number       = {2},
  pages        = {758--768},
  publisher    = {University of Chicago Press},
  series       = {Astrophysical Journal},
  title        = {Systematic Studies of N IV Transitions of Astrophysical Importance},
  url          = {http://dx.doi.org/10.1086/176621},
  volume       = {455},
  year         = {1995},
}