Systematic Studies of N IV Transitions of Astrophysical Importance

Details Systematic Studies of N IV Transitions of Astrophysical Importance Systematic Studies of N IV Transitions of Astrophysical Importance

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...455..758f&link_type=abstract

Astrophysical Journal v.455, p.758

Astronomy and Astrophysics

Astronomy

33

Atomic Data, Atomic Processes

Scientific paper

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 1S-1P^{0 }resonance line, our recommended f-value is 0.609 with an estimated uncertainty of 0.002, while our recommended A-value for the 1S0-3P01 intercombination line is 580 s-1 with an estimated uncertainty of 10 s-1.

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