Multi-Sideband RABBITT in Ar: Experiment and Theory

ORAL

Abstract



The reconstruction of attosecond beating by interference of two-photon transitions (RABBITT) method is a widely employed technique to measure attosecond time delays in photo-ionization processes [1]. Recently, a three-sideband scheme was suggested [2] and analyzed in detail for atomic hydrogen [3].

Here we present our first experimental data using an Ar target, which is easier to handle experimentally but more challenging for theory, due to the multi-electron nature and the active 3p electron having a non-vanishing orbital angular momentum. Consequently, we used the multi-electron R-matrix with time dependence method (RMT) [4] to generate theoretical predictions that will be compared with experimental data.

[1] J. Dahlström et al., Chem. Phys. 414 (2013) 53.

[2] A. Harth et al., PRA 99 (2019) 023410.

[3] D. Bharti et al., PRA 103 (2021) 022834.

[4] A. C. Brown et al., Comput. Phys. Comm. (2019) 107062.

*Work supported by the NSF under PHY-1803844, OAC-1834740, PHY-2012078, XSEDE-090031, the DFG under SPP-1840: 411044455, and by the IMPRS-QD Heidelberg.

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Presenters

  • Divya Bharti

    • MPI-K Heidelberg

Authors

  • Divya Bharti

    • MPI-K Heidelberg

  • Kathryn Hamilton

    • Drake University

  • Hemkumar Srinivas

    • MPI-K Heidelberg

  • Farshad Shobeiry

    • MPI-K Heidelberg

  • Thomas Pfeifer

    • Max-Planck-Institut f¨ur Kernphysik, 69117 Heidelberg, Germany
    • Max-Planck-Institute for Nuclear Physics, 69117 Heidelberg, Germany
    • Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
    • MPI-K Heidelberg
    • Max Planck Institut for Nuclear Physics Heidelberg
    • Max Planck Inst Kernphys

  • Robert Moshammer

    • Max-Planck-Institute for Nuclear Physics, 69117 Heidelberg, Germany
    • MPI-K Heidelberg
    • MPI Heidelberg
    • Max-Planck-Institut für Kernphysik

  • Klaus R Bartschat

    • Drake University

  • Anne Harth

    • MPI-K Heidelberg