Proton scattering from excited states of atomic hydrogen
© 2018 IOP Publishing Ltd. Wavepacket continuum-discretisation approach is used to calculate excitation, ionization and electron-capture (ec) cross sections for proton collisions with n = 2 states of atomic hydrogen, where n is the principal quantum number. The approach assumes a classical motion fo...
| Main Authors: | , , , , |
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| Format: | Journal Article |
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IOP PUBLISHING LTD
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/72951 |
| _version_ | 1848762884962648064 |
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| author | Abdurakhmanov, Ilkhom Alladustov, S. Bailey, J. Kadyrov, Alisher Bray, Igor |
| author_facet | Abdurakhmanov, Ilkhom Alladustov, S. Bailey, J. Kadyrov, Alisher Bray, Igor |
| author_sort | Abdurakhmanov, Ilkhom |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2018 IOP Publishing Ltd. Wavepacket continuum-discretisation approach is used to calculate excitation, ionization and electron-capture (ec) cross sections for proton collisions with n = 2 states of atomic hydrogen, where n is the principal quantum number. The approach assumes a classical motion for the projectile and is based on the solution of the three-body Schrödinger equation using the two-center expansion of the total scattering wave function. The scattering wave function is expanded in an orthonormal basis set built from negative-energy eigenstates and wavepacket pseudostates representing the continuum of both the target atom and the atom formed by the projectile after capturing the electron. With a sufficiently large basis, due to the strong coupling between channels, the method produces converged cross sections for direct-scattering, ionization and ec processes simultaneously. For the quasi-elastic transitions, where both orbital and magnetic quantum numbers change, the integrated cross section is infinite. Nevertheless, the corresponding transitions probabilities are finite at any given impact parameter, indicating that the angular differential cross sections can be measured. Calculated cross sections for scattering on the metastable 2s state are compared with other theoretical results obtained using atomic-orbital close-coupling and classical-trajectory Monte Carlo approaches. Considerable disagreement with previous calculations has been found for some transitions at various incident energies. |
| first_indexed | 2025-11-14T10:54:40Z |
| format | Journal Article |
| id | curtin-20.500.11937-72951 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:54:40Z |
| publishDate | 2018 |
| publisher | IOP PUBLISHING LTD |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-729512018-12-13T09:32:18Z Proton scattering from excited states of atomic hydrogen Abdurakhmanov, Ilkhom Alladustov, S. Bailey, J. Kadyrov, Alisher Bray, Igor © 2018 IOP Publishing Ltd. Wavepacket continuum-discretisation approach is used to calculate excitation, ionization and electron-capture (ec) cross sections for proton collisions with n = 2 states of atomic hydrogen, where n is the principal quantum number. The approach assumes a classical motion for the projectile and is based on the solution of the three-body Schrödinger equation using the two-center expansion of the total scattering wave function. The scattering wave function is expanded in an orthonormal basis set built from negative-energy eigenstates and wavepacket pseudostates representing the continuum of both the target atom and the atom formed by the projectile after capturing the electron. With a sufficiently large basis, due to the strong coupling between channels, the method produces converged cross sections for direct-scattering, ionization and ec processes simultaneously. For the quasi-elastic transitions, where both orbital and magnetic quantum numbers change, the integrated cross section is infinite. Nevertheless, the corresponding transitions probabilities are finite at any given impact parameter, indicating that the angular differential cross sections can be measured. Calculated cross sections for scattering on the metastable 2s state are compared with other theoretical results obtained using atomic-orbital close-coupling and classical-trajectory Monte Carlo approaches. Considerable disagreement with previous calculations has been found for some transitions at various incident energies. 2018 Journal Article http://hdl.handle.net/20.500.11937/72951 10.1088/1361-6587/aad436 IOP PUBLISHING LTD restricted |
| spellingShingle | Abdurakhmanov, Ilkhom Alladustov, S. Bailey, J. Kadyrov, Alisher Bray, Igor Proton scattering from excited states of atomic hydrogen |
| title | Proton scattering from excited states of atomic hydrogen |
| title_full | Proton scattering from excited states of atomic hydrogen |
| title_fullStr | Proton scattering from excited states of atomic hydrogen |
| title_full_unstemmed | Proton scattering from excited states of atomic hydrogen |
| title_short | Proton scattering from excited states of atomic hydrogen |
| title_sort | proton scattering from excited states of atomic hydrogen |
| url | http://hdl.handle.net/20.500.11937/72951 |