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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 5, Iss. 10 — Oct. 1, 1988
  • pp: 2215–2224

Relativistic and correlation effects in the 2s3p configuration of berylliumlike ions

Y.-K. Kim, W. C. Martin, and A. W. Weiss  »View Author Affiliations


JOSA B, Vol. 5, Issue 10, pp. 2215-2224 (1988)
http://dx.doi.org/10.1364/JOSAB.5.002215


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Abstract

Relativistic and correlation effects cause several inversions of the triplet and singlet J = 1 levels in the 2s3p configuration of berylliumlike ions. We have studied these effects in the range of atomic number Z = 6–54 by using both relativistic and nonrelativistic multiconfiguration wave functions. Theoretical predictions of energies of these levels with respect to the 2s21S0 ground level are compared with experimental data, and we conclude that overall the predictions for the ions having Z ≥ 15 are probably more accurate than the available measurements. Calculated oscillator strengths for these resonance transitions are also reported. Near cadmium (Z = 48), we confirm still another inversion that is due to the complete dominance of relativistic effects, which was reported previously. The 2p3s (1/2,1/2)1 level, a doubly excited state, goes below the 2s3p (1/2,3/2)1 level, owing to relativistic hydrogenic ordering. This type of level crossing due to hydrogenic ordering is anticipated in other sequences as well, contrary to our usual experience in atomic spectroscopy.

© 1988 Optical Society of America

History
Original Manuscript: April 5, 1988
Manuscript Accepted: June 20, 1988
Published: October 1, 1988

Citation
Y.-K. Kim, W. C. Martin, and A. W. Weiss, "Relativistic and correlation effects in the 2s3p configuration of berylliumlike ions," J. Opt. Soc. Am. B 5, 2215-2224 (1988)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-5-10-2215

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