Two-center convergent close-coupling calculations for positron-lithium collisions
We report on two-center convergent close-coupling calculations of positron-lithium collisions. The target is treated as one active electron interacting with an inert ion core. The positronium formation channels are taken into account explicitly utilizing both negative- and positive-energy Laguerre-b...
| Main Authors: | , , , |
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| Format: | Journal Article |
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American Physical Society
2010
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| Online Access: | http://hdl.handle.net/20.500.11937/19376 |
| _version_ | 1848750015875383296 |
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| author | Lugovskoy, Andrey Kadyrov, Alisher Bray, Igor Stelbovics, Andris |
| author_facet | Lugovskoy, Andrey Kadyrov, Alisher Bray, Igor Stelbovics, Andris |
| author_sort | Lugovskoy, Andrey |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We report on two-center convergent close-coupling calculations of positron-lithium collisions. The target is treated as one active electron interacting with an inert ion core. The positronium formation channels are taken into account explicitly utilizing both negative- and positive-energy Laguerre-based states. A large number of channels and high partial waves are used to ensure the convergence of the cross sections. We find the Ramsauer-Townsend minimum in total and elastic cross sections at an impact energy E of about 0.0016 eV. As found previously forH and He, the contributions to the breakup cross section from both the Li and the Ps centers become the same as the threshold is approached. |
| first_indexed | 2025-11-14T07:30:07Z |
| format | Journal Article |
| id | curtin-20.500.11937-19376 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:30:07Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-193762017-09-13T13:46:02Z Two-center convergent close-coupling calculations for positron-lithium collisions Lugovskoy, Andrey Kadyrov, Alisher Bray, Igor Stelbovics, Andris Sodium Model Atoms Hydrogen scattering Potentials We report on two-center convergent close-coupling calculations of positron-lithium collisions. The target is treated as one active electron interacting with an inert ion core. The positronium formation channels are taken into account explicitly utilizing both negative- and positive-energy Laguerre-based states. A large number of channels and high partial waves are used to ensure the convergence of the cross sections. We find the Ramsauer-Townsend minimum in total and elastic cross sections at an impact energy E of about 0.0016 eV. As found previously forH and He, the contributions to the breakup cross section from both the Li and the Ps centers become the same as the threshold is approached. 2010 Journal Article http://hdl.handle.net/20.500.11937/19376 10.1103/PhysRevA.82.062708 American Physical Society fulltext |
| spellingShingle | Sodium Model Atoms Hydrogen scattering Potentials Lugovskoy, Andrey Kadyrov, Alisher Bray, Igor Stelbovics, Andris Two-center convergent close-coupling calculations for positron-lithium collisions |
| title | Two-center convergent close-coupling calculations for positron-lithium collisions |
| title_full | Two-center convergent close-coupling calculations for positron-lithium collisions |
| title_fullStr | Two-center convergent close-coupling calculations for positron-lithium collisions |
| title_full_unstemmed | Two-center convergent close-coupling calculations for positron-lithium collisions |
| title_short | Two-center convergent close-coupling calculations for positron-lithium collisions |
| title_sort | two-center convergent close-coupling calculations for positron-lithium collisions |
| topic | Sodium Model Atoms Hydrogen scattering Potentials |
| url | http://hdl.handle.net/20.500.11937/19376 |