23P10-11S0and 33P10-11S0intercombination-line transitions in helium-like ions
- 15 June 1978
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 11 (13) , L391-L394
- https://doi.org/10.1088/0022-3700/11/13/003
Abstract
A Z-expansion method, in which the spin-orbit and electron-electron Coulomb interactions are treated by first-order perturbation theory, is developed for 3P10-1S0 intercombination-line transitions in helium-like ions. Reliable results are obtained for ions with nuclear charge Z<or=14. It is shown that the range of validity of non-relativistic calculations is substantially larger for dipole-allowed than for intercombination-line transitions.Keywords
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