Convergent close-coupling calculations of positron scattering on metastable helium
The convergent close-coupling method has been applied to positron scattering on a helium atom in the 2 S-3 metastable state. For this system the positronium (Ps) formation channel is open even at zero scattering energy making the inclusion of the Ps channels especially important. Spin algebra is pre...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
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American Physical Society
2010
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| Online Access: | http://hdl.handle.net/20.500.11937/8104 |
| _version_ | 1848745558333718528 |
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| author | Utamuratov, R. Kadyrov, Alisher Fursa, Dmitry Bray, Igor Stelbovics, Andris |
| author2 | RANZCR / AIR / FRO / ACPSEM |
| author_facet | RANZCR / AIR / FRO / ACPSEM Utamuratov, R. Kadyrov, Alisher Fursa, Dmitry Bray, Igor Stelbovics, Andris |
| author_sort | Utamuratov, R. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The convergent close-coupling method has been applied to positron scattering on a helium atom in the 2 S-3 metastable state. For this system the positronium (Ps) formation channel is open even at zero scattering energy making the inclusion of the Ps channels especially important. Spin algebra is presented for the general case of arbitrary spins. A proof is given of the often-used assumption about the relationship between the amplitudes for ortho-positronium and para-positronium formation. The cross sections for scattering from 2 3S are shown to be significantly larger than those obtained for the ground state. |
| first_indexed | 2025-11-14T06:19:16Z |
| format | Journal Article |
| id | curtin-20.500.11937-8104 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:19:16Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-81042017-09-13T15:53:52Z Convergent close-coupling calculations of positron scattering on metastable helium Utamuratov, R. Kadyrov, Alisher Fursa, Dmitry Bray, Igor Stelbovics, Andris RANZCR / AIR / FRO / ACPSEM STATES ELECTRON-EXCITATION INTERMEDIATE ENERGIES ELASTIC-SCATTERING The convergent close-coupling method has been applied to positron scattering on a helium atom in the 2 S-3 metastable state. For this system the positronium (Ps) formation channel is open even at zero scattering energy making the inclusion of the Ps channels especially important. Spin algebra is presented for the general case of arbitrary spins. A proof is given of the often-used assumption about the relationship between the amplitudes for ortho-positronium and para-positronium formation. The cross sections for scattering from 2 3S are shown to be significantly larger than those obtained for the ground state. 2010 Journal Article http://hdl.handle.net/20.500.11937/8104 10.1103/PhysRevA.82.042705 American Physical Society restricted |
| spellingShingle | STATES ELECTRON-EXCITATION INTERMEDIATE ENERGIES ELASTIC-SCATTERING Utamuratov, R. Kadyrov, Alisher Fursa, Dmitry Bray, Igor Stelbovics, Andris Convergent close-coupling calculations of positron scattering on metastable helium |
| title | Convergent close-coupling calculations of positron scattering on metastable helium |
| title_full | Convergent close-coupling calculations of positron scattering on metastable helium |
| title_fullStr | Convergent close-coupling calculations of positron scattering on metastable helium |
| title_full_unstemmed | Convergent close-coupling calculations of positron scattering on metastable helium |
| title_short | Convergent close-coupling calculations of positron scattering on metastable helium |
| title_sort | convergent close-coupling calculations of positron scattering on metastable helium |
| topic | STATES ELECTRON-EXCITATION INTERMEDIATE ENERGIES ELASTIC-SCATTERING |
| url | http://hdl.handle.net/20.500.11937/8104 |