Electric-dipole, electric-quadrupole, magnetic-dipole, and magnetic-quadrupole transitions in the neon isoelectronic sequence
Open Access
- 15 June 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 64 (1), 012507
- https://doi.org/10.1103/physreva.64.012507
Abstract
Excitation energies for hole-particle states of Ne-like ions are determined to second order in relativistic many-body perturbation theory (MBPT). Reduced matrix elements, line strengths, and transition rates are calculated for electric-dipole magnetic-quadrupole magnetic-dipole and magnetic-quadrupole transitions in Ne-like ions with nuclear charges ranging from to 100. The calculations start from a closed-shell Dirac-Fock potential and include second-order Coulomb and Breit-Coulomb interactions. First-order many-body perturbation theory (MBPT) is used to obtain intermediate-coupling coefficients, and second-order MBPT is used to determine the matrix elements. Contributions from negative-energy states are included in the second-order and matrix elements. The resulting transition energies are compared with experimental values and with results from other recent calculations. Trends of and transition rates as functions of nuclear charge Z are shown graphically for all transitions to the ground state.
Keywords
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