Time-Resolved Measurement of Interatomic Coulombic Decay Induced by Two-Photon Double Excitation of Ne2

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The hitherto unexplored two-photon doubly excited states [Ne∗(2p-13s)]2 were experimentally identified using the seeded, fully coherent, intense extreme ultraviolet free-electron laser FERMI. These states undergo ultrafast interatomic Coulombic decay (ICD), which predominantly produces singly ionized dimers. In order to obtain the rate of ICD, the resulting yield of Ne2+ ions was recorded as a function of delay between the extreme ultraviolet pump and UV probe laser pulses. The extracted lifetimes of the long-lived doubly excited states, 390(-130/+450) fs, and of the short-lived ones, less than 150 fs, are in good agreement with ab initio quantum mechanical calculations.


  • T Takanashi
  • Vladimir N. Golubev
  • C Callegari
  • H. Fukuzawa
  • K. Motomura
  • D. Iablonskyi
  • Y. Kumagai
  • S. Mondal
  • T. Tachibana
  • K. Nagaya
  • T. Nishiyama
  • K. Matsunami
  • P. Piseri
  • G. Sansone
  • A. Dubrouil
  • M. Reduzzi
  • P. Carpeggiani
  • C. Vozzi
  • M Devetta
  • M. Negro
  • D. Faccialà
  • F. Calegari
  • A. Trabattoni
  • M. C. Castrovilli
  • Y Ovcharenko
  • M. Mudrich
  • F. Stienkemeier
  • M. Coreno
  • M Alagia
  • B. Schütte
  • N. Berrah
  • O Plekan
  • P Finetti
  • C. Spezzani
  • E. Ferrari
  • E. Allaria
  • G. Penco
  • C. Serpico
  • G. De Ninno
  • B. Diviacco
  • S. Di Mitri
  • L. Giannessi
  • G. Jabbari
  • K C Prince
  • Lorenz S. Cederbaum
  • Ph V. Demekhin
  • A. I. Kuleff
  • K. Ueda
External organisations
  • Tohoku University
  • Heidelberg University
  • Elettra Sincrotrone Trieste
  • Kyoto University
  • University of Milan
  • Albert-Ludwigs University Freiburg
  • CNR Institute for Photonics and Nanotechnologies, Rome (IFN)
  • German Electron Synchrotron (DESY)
  • Technical University of Berlin
  • CNR Istituto Officina dei Materiali (IOM)
  • Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy
  • University of Connecticut
  • University of Nova Gorica
  • CNR Istituto di Struttura della Materia (CNR-ISM)
  • University of Kassel
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics
Original languageEnglish
Article number033202
JournalPhysical Review Letters
Issue number3
Publication statusPublished - 2017 Jan 19
Publication categoryResearch