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Calculation of atomic photoionization using the nonsingular convergent close-coupling method

Date

2017

Authors

Bray, Alexander
Kheifets, Anatoli
Bray, Igor

Journal Title

Journal ISSN

Volume Title

Publisher

American Physical Society

Abstract

The convergent close-coupling method for atomic photoionization is modified by treating the singularity in the Green's function analytically. The resultant close-coupling equations are then free of any singularities, and can be solved at all incident energies including at the exact thresholds. The utility and superiority of the approach is demonstrated by considering single photoionization of the ground state of helium at photoelectron energies from the ionic n=1,2,3 thresholds through to 1 keV. For completeness, the double photoionization cross section is also presented.

Description

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Citation

Source

Physical Review A - Atomic, Molecular, and Optical Physics

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1103/PhysRevA.95.053405

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