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Anisotropy Parameters for Two-Color Photoionization Phases in Randomly Oriented Molecules : Theory and Experiment in Methane and Deuteromethane

Ertel, Dominik ; Busto, David LU orcid ; Makos, Ioannis ; Schmoll, Marvin ; Benda, Jakub ; Bragheri, Francesca ; Osellame, Roberto ; Lindroth, Eva ; Patchkovskii, Serguei and Mašín, Zdeněk , et al. (2024) In Journal of Physical Chemistry A 128(9). p.1685-1697
Abstract

We present 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 theoretical predictions in an ensemble of methane and deuteromethane molecules, discussing the effect of nuclear dynamics on the photoionization phases. Finally, we demonstrate... (More)

We present 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 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 by using complex asymmetry parameters, in perfect analogy to the atomic case.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Chemistry A
volume
128
issue
9
pages
13 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • pmid:38394372
  • scopus:85186220927
ISSN
1089-5639
DOI
10.1021/acs.jpca.3c06759
project
Electronic coherence and correlation in attosecond photoionization dynamics
language
English
LU publication?
yes
id
237f23c3-0dda-4c6a-b3c9-7856d626d0a9
date added to LUP
2024-03-19 15:48:38
date last changed
2024-04-16 14:26:20
@article{237f23c3-0dda-4c6a-b3c9-7856d626d0a9,
  abstract     = {{<p>We present 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 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 by using complex asymmetry parameters, in perfect analogy to the atomic case.</p>}},
  author       = {{Ertel, Dominik and Busto, David and Makos, Ioannis and Schmoll, Marvin and Benda, Jakub and Bragheri, Francesca and Osellame, Roberto and Lindroth, Eva and Patchkovskii, Serguei and Mašín, Zdeněk and Sansone, Giuseppe}},
  issn         = {{1089-5639}},
  language     = {{eng}},
  number       = {{9}},
  pages        = {{1685--1697}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Journal of Physical Chemistry A}},
  title        = {{Anisotropy Parameters for Two-Color Photoionization Phases in Randomly Oriented Molecules : Theory and Experiment in Methane and Deuteromethane}},
  url          = {{http://dx.doi.org/10.1021/acs.jpca.3c06759}},
  doi          = {{10.1021/acs.jpca.3c06759}},
  volume       = {{128}},
  year         = {{2024}},
}