https://doi.org/10.1140/epjs/s11734-023-00815-7
Regular Article
Angularly resolved photoionization dynamics in atoms and molecules combining temporally and spectrally resolved experiments at ATTOLab and Synchrotron SOLEIL
1
Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d’Orsay, 91405, Orsay, France
2
Université Paris-Saclay, Synchrotron SOLEIL, 91190, Saint Aubin, France
3
Université Paris-Saclay, CEA, CNRS, LIDYL, 91191, Gif Sur Yvette, France
4
Chemical Sciences Division, Lawrence Berkeley National Laboratory, 94720, Berkeley, CA, USA
g
danielle.dowek@universite-paris-saclay.fr
Received:
7
November
2022
Accepted:
10
March
2023
Published online:
13
April
2023
We report results for XUV-IR two-photon ionization of Ar, Ne, NO, and O2, where an XUV attosecond pulse train is superimposed with a synchronized IR pulse, obtained at the ATTOLab laser facility using electron–ion coincidence 3D momentum spectroscopy. Temporally resolved photoelectron angular distributions providing angle-resolved time-delays for np ionization of Ar and Ne, achieved by reconstruction of attosecond beating by interference of two-photon transitions through a unified formalism (Joseph et al. in J Phys B At Mol Opt Phys 53:184007, 2020), are summarized. For inner valence XUV-IR dissociative photoionization of NO and O2 molecules, we report electron–ion kinetic energy correlation diagrams and disentangle the dissociative photoionization processes relying on parallel XUV experiments at Synchrotron SOLEIL. For ionization into the NO+(
) ionic state, extending the formalism developed for single-photon ionization, we focus on photoelectron angular distributions averaged on the delay between the XUV and the IR field in the field frame, molecular frame, and electron frame of reference.
S.I.: Ultrafast phenomena from attosecond to picosecond timescales: theory and experiments. Guest editors: Franck Lépine and Lionel Poisson.
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