Systematic Studies of N IV Transitions of Astrophysical Importance
(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:
https://lup.lub.lu.se/record/3918943
- author
- Fleming, J ; Brage, Tomas LU ; Bell, KL ; Vaeck, N ; HIibbert, A ; Godefroid, MR and Fischer, CF
- publishing date
- 1995
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- ATOMIC DATA, ATOMIC PROCESSES
- in
- Astrophysical Journal
- volume
- 455
- issue
- 2
- pages
- 758 - 768
- publisher
- American Astronomical Society
- external identifiers
-
- wos:A1995TK12500036
- scopus:11944257603
- ISSN
- 0004-637X
- DOI
- 10.1086/176621
- language
- English
- LU publication?
- no
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Physics, science (011013100)
- id
- 5796f12a-284c-44c7-aa39-100e000487ee (old id 3918943)
- date added to LUP
- 2016-04-01 16:37:40
- date last changed
- 2021-01-03 09:31:24
@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}}, keywords = {{ATOMIC DATA; ATOMIC PROCESSES}}, language = {{eng}}, number = {{2}}, pages = {{758--768}}, publisher = {{American Astronomical Society}}, series = {{Astrophysical Journal}}, title = {{Systematic Studies of N IV Transitions of Astrophysical Importance}}, url = {{http://dx.doi.org/10.1086/176621}}, doi = {{10.1086/176621}}, volume = {{455}}, year = {{1995}}, }