Two-photon resonant excitation of interatomic coulombic decay in neon dimers

A. Dubrouil, M. Reduzzi, M. Devetta, C. Feng, J. Hummert, P. Finetti, O. Plekan, C. Grazioli, M. Di Fraia, V. Lyamayev, A. La Forge, R. Katzy, F. Stienkemeier, Y. Ovcharenko, M. Coreno, N. Berrah, K. Motomura, S. Mondal, K. Ueda, K. C. PrinceC. Callegari, A. I. Kuleff, Ph V. Demekhin, G. Sansone

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The recent availability of intense and ultrashort extreme ultraviolet sources opens up the possibility of investigating ultrafast electronic relaxation processes in matter in an unprecedented regime. In this work we report on the observation of two-photon excitation of interatomic Coulombic decay (ICD) in neon dimers using the tunable intense pulses delivered by the free electron laser FERMI. The unique characteristics of FERMI (narrow bandwidth, spectral stability, and tunability) allow one to resonantly excite specific ionization pathways and to observe a clear signature of the ICD mechanism in the ratio of the ion yield created by Coulomb explosion. The present experimental results are explained by ab initio electronic structure and nuclear dynamics calculations.

Original languageEnglish
Article number204005
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume48
Issue number20
DOIs
Publication statusPublished - 2015 Sep 16

Keywords

  • interatomic coulombic decay
  • nonlinear interaction in the extreme ultraviolet
  • ultrafast dynamics

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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