XUV ionization of the H$_2$ molecule studied with attosecond angular streaking
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| Format: | Preprint |
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2022
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| _version_ | 1866918360392925184 |
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| author | Serov, Vladislav V. Kheifets, Anatoli S. |
| author_facet | Serov, Vladislav V. Kheifets, Anatoli S. |
| contents | We study orientation and two-center interference effects in attosecond time-resolved photoionization of the H$_2$ molecule. Time resolution of XUV ionization of H$_2$ is gained through the phase retrieval capability of attosecond angular streaking demonstrated earlier by Kheifets {\em et al} [arXiv:2202.06147 (2022)]. Once applied to H$_2$, this technique delivers an anisotropic phase and time delay which both depend sensitively on the molecular axis orientation. In addition, the photoelectron momentum distribution displays a very clear two-center interference pattern. When the interference formula due to Walter and Briggs [J. Phys. B {\bf 32} 2487 (1999)] is applied, an effective photoelectron momentum appears to be greater than the asymptotic momentum at the detector. This effect is explained by a molecular potential well surrounding the photoemission center. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2204_09161 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | XUV ionization of the H$_2$ molecule studied with attosecond angular streaking Serov, Vladislav V. Kheifets, Anatoli S. Atomic Physics We study orientation and two-center interference effects in attosecond time-resolved photoionization of the H$_2$ molecule. Time resolution of XUV ionization of H$_2$ is gained through the phase retrieval capability of attosecond angular streaking demonstrated earlier by Kheifets {\em et al} [arXiv:2202.06147 (2022)]. Once applied to H$_2$, this technique delivers an anisotropic phase and time delay which both depend sensitively on the molecular axis orientation. In addition, the photoelectron momentum distribution displays a very clear two-center interference pattern. When the interference formula due to Walter and Briggs [J. Phys. B {\bf 32} 2487 (1999)] is applied, an effective photoelectron momentum appears to be greater than the asymptotic momentum at the detector. This effect is explained by a molecular potential well surrounding the photoemission center. |
| title | XUV ionization of the H$_2$ molecule studied with attosecond angular streaking |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2204.09161 |