Basis-set approach to calculating the radiative self-energy in highly ionized atoms
- 1 August 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 44 (3), R1427-R1430
- https://doi.org/10.1103/physreva.44.r1427
Abstract
We present a complete numerical implementation of an alternative approach for evaluating the electron radiative self-energy in high-Z hydrogenic ions. Using basis-set techniques, we demonstrate that the partial-wave expansion of the most numerically intensive term converges relatively rapidly as approximately 1/, making this an attractive calculational approach. Numerical results extrapolated to zero nuclear size are in agreement with Mohr [Ann. Phys. (N.Y.) 88, 26 (1974); 88, 52 (1974); Phys. Rev. Lett. 34, 1050 (1975); Phys. Rev. A 26, 2338 (1982)] for the K and L shells, and with the graphical results of Mohr and Kim (unpublished) for higher excited states. The algorithm is suitable for immediate generalization to non-Coulombic potentials.
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