Anisotropy parameters for two-color photoionization phases in randomly oriented molecules: theory and experiment in methane and deuteromethane
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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866910308098899968 |
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| author | Ertel, Dominik Busto, David Makos, Ioannis Schmoll, Marvin Benda, Jakub Bragheri, Francesca Osellame, Roberto Lindroth, Eva Patchkovskii, Seguei Masin, Zdenek Sansone, Giuseppe |
| author_facet | Ertel, Dominik Busto, David Makos, Ioannis Schmoll, Marvin Benda, Jakub Bragheri, Francesca Osellame, Roberto Lindroth, Eva Patchkovskii, Seguei Masin, Zdenek Sansone, Giuseppe |
| contents | We present a combined theoretical and experimental work investigating the angle-resolved phases of the photoionization process driven by a two-color field consisting of an attosecond pulse train and an infrared pulse in an ensemble of randomly oriented molecules. We derive a general form for the two-color photoelectron (and time-delay) angular distribution valid also in the case of chiral molecules and when relative polarizations of the photons contributing to the attosecond photoelectron interferometer differ. We show a comparison between the experimental data and the theoretical predictions in an ensemble of methane and deuteromethane molecules, discussing the effect of nuclear dynamics on the photoionization phases. Finally, we demonstrate that the oscillating component and the phase of the two-color signal can be fitted using complex asymmetry parameters, in perfect analogy with the atomic case. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_14566 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Anisotropy parameters for two-color photoionization phases in randomly oriented molecules: theory and experiment in methane and deuteromethane Ertel, Dominik Busto, David Makos, Ioannis Schmoll, Marvin Benda, Jakub Bragheri, Francesca Osellame, Roberto Lindroth, Eva Patchkovskii, Seguei Masin, Zdenek Sansone, Giuseppe Chemical Physics We present a combined theoretical and experimental work investigating the angle-resolved phases of the photoionization process driven by a two-color field consisting of an attosecond pulse train and an infrared pulse in an ensemble of randomly oriented molecules. We derive a general form for the two-color photoelectron (and time-delay) angular distribution valid also in the case of chiral molecules and when relative polarizations of the photons contributing to the attosecond photoelectron interferometer differ. We show a comparison between the experimental data and the theoretical predictions in an ensemble of methane and deuteromethane molecules, discussing the effect of nuclear dynamics on the photoionization phases. Finally, we demonstrate that the oscillating component and the phase of the two-color signal can be fitted using complex asymmetry parameters, in perfect analogy with the atomic case. |
| title | Anisotropy parameters for two-color photoionization phases in randomly oriented molecules: theory and experiment in methane and deuteromethane |
| topic | Chemical Physics |
| url | https://arxiv.org/abs/2401.14566 |