The influence of final state interactions in attosecond photoelectron interferometry
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866913404671754240 |
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| author | Luo, Sizuo Weissenbilder, Robin Laurell, Hugo Bello, Roger Y. Marante, Carlos Ammitzböll, Mattias Neoričić, Lana Ljungdahl, Anton Squibb, Richard J. Feifel, Raimund Gisselbrecht, Mathieu Arnold, Cord L. Martín, Fernando Lindroth, Eva Argenti, Luca Busto, David L'Huillier, Anne |
| author_facet | Luo, Sizuo Weissenbilder, Robin Laurell, Hugo Bello, Roger Y. Marante, Carlos Ammitzböll, Mattias Neoričić, Lana Ljungdahl, Anton Squibb, Richard J. Feifel, Raimund Gisselbrecht, Mathieu Arnold, Cord L. Martín, Fernando Lindroth, Eva Argenti, Luca Busto, David L'Huillier, Anne |
| contents | Fano resonances are ubiquitous phenomena appearing in many fields of physics, e.g. atomic or molecular photoionization, or electron transport in quantum dots. Recently, attosecond interferometric techniques have been used to measure the amplitude and phase of photoelectron wavepackets close to Fano resonances in argon and helium, allowing for the retrieval of the temporal dynamics of the photoionization process. In this work, we study the photoionization of argon atoms close to the $3s^13p^64p$ autoionizing state using an interferometric technique with high spectral resolution. The phase shows a monotonic $2π$ increase across the resonance or a sigmoïdal less than $π$ variation depending on experimental conditions, e.g. the probe laser bandwidth. Using three different, state-of-the-art calculations, we show that the measured phase is influenced by the interaction between final states reached by two-photon transitions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_17539 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The influence of final state interactions in attosecond photoelectron interferometry Luo, Sizuo Weissenbilder, Robin Laurell, Hugo Bello, Roger Y. Marante, Carlos Ammitzböll, Mattias Neoričić, Lana Ljungdahl, Anton Squibb, Richard J. Feifel, Raimund Gisselbrecht, Mathieu Arnold, Cord L. Martín, Fernando Lindroth, Eva Argenti, Luca Busto, David L'Huillier, Anne Atomic Physics Fano resonances are ubiquitous phenomena appearing in many fields of physics, e.g. atomic or molecular photoionization, or electron transport in quantum dots. Recently, attosecond interferometric techniques have been used to measure the amplitude and phase of photoelectron wavepackets close to Fano resonances in argon and helium, allowing for the retrieval of the temporal dynamics of the photoionization process. In this work, we study the photoionization of argon atoms close to the $3s^13p^64p$ autoionizing state using an interferometric technique with high spectral resolution. The phase shows a monotonic $2π$ increase across the resonance or a sigmoïdal less than $π$ variation depending on experimental conditions, e.g. the probe laser bandwidth. Using three different, state-of-the-art calculations, we show that the measured phase is influenced by the interaction between final states reached by two-photon transitions. |
| title | The influence of final state interactions in attosecond photoelectron interferometry |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2406.17539 |