Calculation of atomic photoionization using the nonsingular convergent close-coupling method
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....
| Main Authors: | , , |
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| Format: | Journal Article |
| Published: |
American Physical Society
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/54356 |
| _version_ | 1848759351480680448 |
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| author | Bray, A. Kheifets, A. Bray, Igor |
| author_facet | Bray, A. Kheifets, A. Bray, Igor |
| author_sort | Bray, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T09:58:30Z |
| format | Journal Article |
| id | curtin-20.500.11937-54356 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:58:30Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-543562018-03-01T03:58:33Z Calculation of atomic photoionization using the nonsingular convergent close-coupling method Bray, A. Kheifets, A. Bray, Igor 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. 2017 Journal Article http://hdl.handle.net/20.500.11937/54356 10.1103/PhysRevA.95.053405 American Physical Society restricted |
| spellingShingle | Bray, A. Kheifets, A. Bray, Igor Calculation of atomic photoionization using the nonsingular convergent close-coupling method |
| title | Calculation of atomic photoionization using the nonsingular convergent close-coupling method |
| title_full | Calculation of atomic photoionization using the nonsingular convergent close-coupling method |
| title_fullStr | Calculation of atomic photoionization using the nonsingular convergent close-coupling method |
| title_full_unstemmed | Calculation of atomic photoionization using the nonsingular convergent close-coupling method |
| title_short | Calculation of atomic photoionization using the nonsingular convergent close-coupling method |
| title_sort | calculation of atomic photoionization using the nonsingular convergent close-coupling method |
| url | http://hdl.handle.net/20.500.11937/54356 |