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Relativistic effects and systematic trends in electric quadrupole transition probabilities for Na-like ions

E Charro and I Martín

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Transition probabilities for electric quadrupole (E2) spectral lines between levels with Δl = 0 of the Na isoelectronic sequence, from Si IV (Z = 14) to Kr XXVI (Z = 36), have been calculated in the LSJ-coupling scheme using the relativistic quantum defect orbital method. Our data are compared with the very few results available, and their systematic trends as well as the influence of the main relativistic contributions to the oscillator strengths are analysed for several transitions along this sequence.


PACS

31.30.J- Relativistic and quantum electrodynamic (QED) effects in atoms, molecules, and ions

32.70.Cs Oscillator strengths, lifetimes, transition moments

32.30.-r Atomic spectra

Subjects

Atomic and molecular physics

Dates

Issue 15 (14 August 2002)

Received 5 December 2001, in final form 24 June 2002

Published 24 July 2002



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