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Marcel Mudrich

Electron transfer mediated decay of alkali dimers attached to He nanodroplets

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  • Ltaief Ben Ltaief
  • Mykola Shcherbinin
  • ,
  • S. Mandal, Indian Institute of Science Education and Research Pune, Danmark
  • Siva Rama Krishnan
  • ,
  • R. Richter, Elettra-Sincrotrone Trieste S.C.p.A., Elettra-Sincrotrone Trieste, Trieste, Italien
  • T. Pfeifer, Max-Planck-Institut für Kernphysik, Danmark
  • M. Bauer, Tyskland
  • A. Ghosh, Tyskland
  • Marcel Mudrich
  • Kirill Gokhberg, Heidelberg Univ, Ruprecht Karls University Heidelberg, Zentrum Astron, Landessternwarte Konigstuhl
  • ,
  • A. C. LaForge, University of Connecticut, USA

Alkali metal dimers attached to the surface of helium nanodroplets are found to be efficiently doubly ionized by electron transfer mediated decay (ETMD) when photoionizing the helium droplets. This process is evidenced by detecting in coincidence two energetic ions created by Coulomb explosion and one low-kinetic energy electron. The kinetic energy spectra of ions and electrons are reproduced by simple model calculations based on diatomic potential energy curves, and are in agreement withab initiocalculations for the He-Na 2and He-KRb systems. This work demonstrates that ETMD is an important decay channel in heterogeneous nanosystems exposed to ionizing radiation.

OriginalsprogEngelsk
TidsskriftPhysical Chemistry Chemical Physics
Vol/bind22
Nummer16
Sider (fra-til)8557-8564
Antal sider8
ISSN1463-9076
DOI
StatusUdgivet - 2020

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