Simple discretization method for autoionization widths. II. Atoms
- 1 November 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 36 (9), 4187-4202
- https://doi.org/10.1103/physreva.36.4187
Abstract
We apply a method to calculate autoionization widths of doubly excited states, recently proposed by Mac̆´as and Riera [Chem. Phys. Lett. 117, 42 (1985); Europhys. Lett. 2, 351 (1986); Phys. Lett. 119A, 28 (1986)] and described in detail in the preceding article (this issue), to the lowest (nonrelativistic) He-like Feshbach resonances of ,3S, , ,3D symmetry. Comparison with accurate data from the literature is shown to be very good. We also present the contributions to the resonance widths from configurations of a given type, or character, making up the closed-channel wave functions. An important advantage of our approach, which is its simplicity, permits us to set up a number of tests for the approximations involved and regarding the use of different discretizing basis sets.
Keywords
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