Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007phrva..76d2507c&link_type=abstract
Physical Review A, vol. 76, Issue 4, id. 042507
Astronomy and Astrophysics
Astronomy
4
Properties Of Atoms, Intensities And Shapes Of Atomic Spectral Lines, Atomic And Molecular Data, Spectra, And Spectral Parameters
Scientific paper
Using the multiconfiguration Dirac-Fock method, including the quantum electrodynamics corrections, especially with the Breit interactions, we calculate the electric quadrupole (E2) and magnetic dipole (M1) transition rates for the two transitions D5/2,3/2o2→S3/2o4 of OII . We show systematically that the correlation effects owing to core electron excitations and the Breit interactions are vitally important for the transition rates. We present a benchmark for the intensity ratio between the two transitions in the limit of high electron density in planetary nebulas, i.e., r(∞)=0.345-0.014+0.028 , which is in good agreement with modern astronomical observations.
Chen Shaohao
Li Jiaming
Qing Bo
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