dorsal/arxiv
View SchemaRelativistic many-body calculations of excitation energies and transition rates in ytterbium-like ions
| Authors | U. I. Safronova, W. R. Johnson, M. S. Safronova, J. R. Albritton |
|---|---|
| Categories | |
| ArXiv ID | physics/0205051 |
| URL | https://arxiv.org/abs/physics/0205051 |
| DOI | 10.1103/PhysRevA.66.022507 |
| Journal | Phys. Rev. A 66, 022507, 1-10 (2002) |
Abstract
Excitation energies, oscillator strengths, and transition rates are calculated for (5d2+5d6s+6s2)--(5d6p+5d5f+6s6p) electric dipole transitions in Yb-like ions with nuclear charges Z ranging from 72 to 100. Relativistic many-body perturbation theory (RMBPT), including the retarded Breit interaction, is used to evaluate retarded E1 matrix elements in length and velocity forms. The calculations start from a [Xe]4f14 core Dirac-Fock potential. First-order RMBPT is used to obtain intermediate coupling coefficients, and second-order RMBPT is used to determine matrix elements. A detailed discussion of the various contributions to energy levels and dipole matrix elements is given for ytterbium like rhenium, Z=75. The resulting transition energies are compared with experimental values and with results from other recent calculations. Trends of excitation energies, line strengths, oscillator strengths, and transition rates as functions of nuclear charge Z are shown graphically for selected states and transitions. These calculations are presented as a theoretical benchmark for comparison with experiment and theory.
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"abstract": "Excitation energies, oscillator strengths, and transition rates are\ncalculated for (5d2+5d6s+6s2)--(5d6p+5d5f+6s6p) electric dipole transitions in\nYb-like ions with nuclear charges Z ranging from 72 to 100. Relativistic\nmany-body perturbation theory (RMBPT), including the retarded Breit\ninteraction, is used to evaluate retarded E1 matrix elements in length and\nvelocity forms. The calculations start from a [Xe]4f14 core Dirac-Fock\npotential. First-order RMBPT is used to obtain intermediate coupling\ncoefficients, and second-order RMBPT is used to determine matrix elements. A\ndetailed discussion of the various contributions to energy levels and dipole\nmatrix elements is given for ytterbium like rhenium, Z=75. The resulting\ntransition energies are compared with experimental values and with results from\nother recent calculations. Trends of excitation energies, line strengths,\noscillator strengths, and transition rates as functions of nuclear charge Z are\nshown graphically for selected states and transitions.\n These calculations are presented as a theoretical benchmark for comparison\nwith experiment and theory.",
"arxiv_id": "physics/0205051",
"authors": [
"U. I. Safronova",
"W. R. Johnson",
"M. S. Safronova",
"J. R. Albritton"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1103/PhysRevA.66.022507",
"journal_ref": "Phys. Rev. A 66, 022507, 1-10 (2002)",
"title": "Relativistic many-body calculations of excitation energies and transition rates in ytterbium-like ions",
"url": "https://arxiv.org/abs/physics/0205051"
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