SiII Radiative transition rates (Bautista+, 2009)

Details SiII Radiative transition rates (Bautista+, 2009) SiII Radiative transition rates (Bautista+, 2009)

Nov 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009ycat..35081527b&link_type=abstract

VizieR On-line Data Catalog: J/A+A/508/1527. Originally published in: 2009A&A...508.1527B

Physics

Atomic Physics

Atomic Physics

Scientific paper

This work reports on radiative transition rates and electron impact excitation collision strengths for levels of the 3s23p, 3s3p2, 3s24s, and 3s23d configurations of Si II.
The radiative data were computed using the Thomas-Fermi-Dirac-Amaldi central potential, but with the modifications introduced by Bautista (2008, J. Phys. B: Atom. Mol. Opt. Phys., 41, 065701) that account for the effects of electron-electron interactions. We also introduce new schemes for the optimization of the variational parameters of the potential. Additional calculations were carried out with the Relativistic Hartree-Fock and the multiconfiguration Dirac-Fock methods. Collision strengths in LS-coupling were calculated in the close coupling approximation with the R-matrix method. Then, fine structure collision strengths were obtained by means of the intermediate-coupling frame transformation (ICFT) method which accounts for spin-orbit coupling effects.
(2 data files).

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