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Attosecond electron–spin dynamics in Xe 4d photoionization

Author

Listed:
  • Shiyang Zhong

    (Lund University)

  • Jimmy Vinbladh

    (Stockholm University, AlbaNova University Center)

  • David Busto

    (Lund University)

  • Richard J. Squibb

    (University of Gothenburg)

  • Marcus Isinger

    (Lund University)

  • Lana Neoričić

    (Lund University)

  • Hugo Laurell

    (Lund University)

  • Robin Weissenbilder

    (Lund University)

  • Cord L. Arnold

    (Lund University)

  • Raimund Feifel

    (University of Gothenburg)

  • Jan Marcus Dahlström

    (Lund University)

  • Göran Wendin

    (Chalmers University of Technology)

  • Mathieu Gisselbrecht

    (Lund University)

  • Eva Lindroth

    (Stockholm University, AlbaNova University Center)

  • Anne L’Huillier

    (Lund University)

Abstract

The photoionization of xenon atoms in the 70–100 eV range reveals several fascinating physical phenomena such as a giant resonance induced by the dynamic rearrangement of the electron cloud after photon absorption, an anomalous branching ratio between intermediate Xe+ states separated by the spin-orbit interaction and multiple Auger decay processes. These phenomena have been studied in the past, using in particular synchrotron radiation, but without access to real-time dynamics. Here, we study the dynamics of Xe 4d photoionization on its natural time scale combining attosecond interferometry and coincidence spectroscopy. A time-frequency analysis of the involved transitions allows us to identify two interfering ionization mechanisms: the broad giant dipole resonance with a fast decay time less than 50 as, and a narrow resonance at threshold induced by spin-flip transitions, with much longer decay times of several hundred as. Our results provide insight into the complex electron-spin dynamics of photo-induced phenomena.

Suggested Citation

  • Shiyang Zhong & Jimmy Vinbladh & David Busto & Richard J. Squibb & Marcus Isinger & Lana Neoričić & Hugo Laurell & Robin Weissenbilder & Cord L. Arnold & Raimund Feifel & Jan Marcus Dahlström & Göran , 2020. "Attosecond electron–spin dynamics in Xe 4d photoionization," Nature Communications, Nature, vol. 11(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-18847-1
    DOI: 10.1038/s41467-020-18847-1
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