Systematic Studies of N IV Transitions of Astrophysical Importance
Författare
Summary, in English
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).
Publiceringsår
1995
Språk
Engelska
Sidor
758-768
Publikation/Tidskrift/Serie
Astrophysical Journal
Volym
455
Issue
2
Dokumenttyp
Artikel i tidskrift
Förlag
American Astronomical Society
Ämne
- Physical Sciences
Nyckelord
- ATOMIC DATA
- ATOMIC PROCESSES
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0004-637X