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Cord Arnold

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Attosecond electron–spin dynamics in Xe 4d photoionization

Author

  • 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 Wendin
  • Mathieu Gisselbrecht
  • Eva Lindroth
  • Anne L’Huillier
Show all

Summary, in English

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.

Department/s

  • Atomic Physics
  • Mathematical Physics
  • Synchrotron Radiation Research
  • NanoLund: Centre for Nanoscience

Publishing year

2020-12-01

Language

English

Publication/Series

Nature Communications

Volume

11

Issue

1

Document type

Journal article

Publisher

Nature Publishing Group

Topic

  • Atom and Molecular Physics and Optics

Status

Published

Project

  • Attosecond chronoscopy of electron wave-packets probing entanglement and time-ordering of quantum processes

ISBN/ISSN/Other

  • ISSN: 2041-1723