The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Systematic Studies of N IV Transitions of Astrophysical Importance

På svenska

Author

  • J Fleming
  • Tomas Brage
  • KL Bell
  • N Vaeck
  • A HIibbert
  • MR Godefroid
  • CF Fischer

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).

Publishing year

1995

Language

English

Pages

758-768

Publication/Series

Astrophysical Journal

Volume

455

Issue

2

Document type

Journal article

Publisher

American Astronomical Society

Topic

  • Physical Sciences

Keywords

  • ATOMIC DATA
  • ATOMIC PROCESSES

Status

Published

ISBN/ISSN/Other

  • ISSN: 0004-637X