Timing analysis of two-electron photoemission
We predict a significant delay of two-electron photoemission from the helium atom after absorption of an attosecond XUV pulse. We establish this delay by solving the time-dependent Schr¨odinger equation and by subsequently tracing the field-free evolution of the two-electron wave packet. This delay...
| Main Authors: | , , |
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| Format: | Journal Article |
| Published: |
Institute of Physics Publishing Ltd.
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/49033 |
| _version_ | 1848758150757351424 |
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| author | Kheifets, A. Ivanov, I. Bray, Igor |
| author_facet | Kheifets, A. Ivanov, I. Bray, Igor |
| author_sort | Kheifets, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We predict a significant delay of two-electron photoemission from the helium atom after absorption of an attosecond XUV pulse. We establish this delay by solving the time-dependent Schr¨odinger equation and by subsequently tracing the field-free evolution of the two-electron wave packet. This delay can also be related to the energy derivative of the phase of the complex double-photoionization (DPI) amplitude which we evaluate by using the convergent close-coupling method. Our observations indicate that future attosecond time delay measurements on DPI of He can provide information on the absolute quantum phase and elucidate various mechanisms of this strongly correlated ionization process. |
| first_indexed | 2025-11-14T09:39:25Z |
| format | Journal Article |
| id | curtin-20.500.11937-49033 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:39:25Z |
| publishDate | 2011 |
| publisher | Institute of Physics Publishing Ltd. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-490332018-04-19T01:24:29Z Timing analysis of two-electron photoemission Kheifets, A. Ivanov, I. Bray, Igor We predict a significant delay of two-electron photoemission from the helium atom after absorption of an attosecond XUV pulse. We establish this delay by solving the time-dependent Schr¨odinger equation and by subsequently tracing the field-free evolution of the two-electron wave packet. This delay can also be related to the energy derivative of the phase of the complex double-photoionization (DPI) amplitude which we evaluate by using the convergent close-coupling method. Our observations indicate that future attosecond time delay measurements on DPI of He can provide information on the absolute quantum phase and elucidate various mechanisms of this strongly correlated ionization process. 2011 Journal Article http://hdl.handle.net/20.500.11937/49033 10.1088/0953-4075/44/10/101003 Institute of Physics Publishing Ltd. restricted |
| spellingShingle | Kheifets, A. Ivanov, I. Bray, Igor Timing analysis of two-electron photoemission |
| title | Timing analysis of two-electron photoemission |
| title_full | Timing analysis of two-electron photoemission |
| title_fullStr | Timing analysis of two-electron photoemission |
| title_full_unstemmed | Timing analysis of two-electron photoemission |
| title_short | Timing analysis of two-electron photoemission |
| title_sort | timing analysis of two-electron photoemission |
| url | http://hdl.handle.net/20.500.11937/49033 |