Timing analysis of two-electron photoemission
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2010
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| _version_ | 1866917300027785216 |
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| author | Kheifets, A. S. Ivanov, I. A. Bray, Igor. |
| author_facet | Kheifets, A. S. Ivanov, I. A. Bray, Igor. |
| contents | 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 Schrödinger equation and by subsequent 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 the convergent close-coupling method. Our observations prompt future attosecond streaking experiments on DPI of He which can elucidate various mechanisms of this strongly correlated ionization process. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1012_1048 |
| institution | arXiv |
| publishDate | 2010 |
| record_format | arxiv |
| spellingShingle | Timing analysis of two-electron photoemission Kheifets, A. S. Ivanov, I. A. Bray, Igor. Atomic Physics 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 Schrödinger equation and by subsequent 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 the convergent close-coupling method. Our observations prompt future attosecond streaking experiments on DPI of He which can elucidate various mechanisms of this strongly correlated ionization process. |
| title | Timing analysis of two-electron photoemission |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/1012.1048 |