1999A&AS..135..159M


C.D.S. - SIMBAD4 rel 1.7 - 2019.07.18CEST11:55:49

1999A&AS..135..159M - Astron. Astrophys., Suppl. Ser., 135, 159-169 (1999/February-2)

Atomic data from the IRON Project. XXXIII. Radiative rates for the intercombination transitions in the carbon isoelectronic sequence.

MENDOZA C., ZEIPPEN C.J. and STOREY P.J.

Abstract (from CDS):

Radiative decay rates are computed with the atomic structure code superstructure for the 2s2p3 5So2 - 2s22p2 3P1, 3P2 and 1D2 intercombination transitions of the carbon isoelectronic sequence (6 ≤Z ≤28). Contributions from configuration interaction and relativistic corrections are carefully studied, in particular the spin-spin interaction that is shown to be of considerable importance for low Z. By extensive comparisons with other theoretical datasets and measurements of the 5So2 radiative lifetime and the B=A(5So2 - 3P2)/A(5So2 - 3P1) branching ratio, we are able to assign accuracy ratings to the present transition probabilities. The transitions to the ground term are believed to be accurate to better than 10% whereas the smaller A-values belonging to transitions to the 1D2 are not expected to be accurate to more than 20%.

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Journal keyword(s): atomic data

VizieR on-line data: <Available at CDS (J/A+AS/135/159): tab8-10.dat table11.dat table12.dat>

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