Physics – Atomic Physics
Scientific paper
Aug 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ycat..41310499g&link_type=abstract
VizieR On-line Data Catalog: J/A+AS/131/499. Originally published in: 1998A&AS..131..499G
Physics
Atomic Physics
Atomic Physics
Scientific paper
As part of the IRON Project, radiative rates have been calculated for the E1, E2 and M1 transitions within the n=2 complex in ions of the boron isoelectronic sequence (6<=Z<=28). The computations have been carried out with the atomic structure code SUPERSTRUCTURE which facilitates the generation of extended radiative datasets including configuration interaction, Breit-Pauli relativistic contributions and semi-empirical term-energy corrections. By means of extensive comparisons with the available datasets for this sequence, with detailed single-ion calculations and recent experiments, we have been able to assign accuracy ratings to the present A-values. We find that in general the spin-allowed and spin-forbidden E1 transitions are accurate to 10% and 20%, respectively, except for a few transitions in ions with Z<=7 that are perturbed by admixture with low-lying n=3 states (e.g. 2s23l) and for those affected by the avoided crossing of the 2s2p2 2S1/2 and 2P1/2 which takes place at Z~22. It is concluded that, statistically, the present dataset is the most accurate to date for this astrophysically relevant sequence.
(1 data file).
Galavis M. E.
Mendoza Carolina
Zeippen Claude J.
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