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Phys. Rev. A 61, 062704 (2000) [7 pages]

B-spline-based multichannel K-matrix method for atomic photoionization

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T. K. Fang
Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei, Taiwan 10764, Republic of China

T. N. Chang
Department of Physics and Astronomy, University of Southern California, Los Angeles, California 90089-0484

Received 19 October 1999; published 10 May 2000

We present a B-spline-based multichannel K-matrix method following an extension from a B-spline-based configuration-interaction approach. Theoretical procedures are presented in detail for its application to photoionization from two-electron and divalent (e.g., alkaline-earth) atoms. Numerical examples, including doubly excited photoionization spectra above the N=2 threshold from the He 1s2s 1S metastable state, are also given.


©2000 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.61.062704
DOI: 10.1103/PhysRevA.61.062704
PACS: 32.80.Fb, 32.80.Dz, 32.80.Gc, 31.25.-v

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