Auger recombination dynamics in Hg13- clusters

Graham B. Griffin, Aster Kammrath, Oli T. Ehrler, Ryan M. Young, Ori Cheshnovsky, Daniel M. Neumark*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Electronic relaxation dynamics following interband excitation from the 6s to the 6p band in mass selected Hg13- clusters are measured through femtosecond time-resolved photoelectron imaging (TRPEI). This interband transition is pumped at 4.65 eV and probed at 1.55 eV. Auger decay of occurs on a timescale of 490 ± 100 fs, and a similar time constant is seen for the transient excited state population created by the pump pulse. These time constants are an order of magnitude faster than those seen in previous experiments in which the lone p-electron in Hg13- was excited within the p-band. The results presented here imply that substantial relaxation of either electrons in the p-band or the hole in the s-band takes place prior to Auger emission, with electron-electron scattering playing a key role in the fast observed dynamics.

Original languageEnglish
Pages (from-to)69-74
Number of pages6
JournalChemical Physics
Volume350
Issue number1-3
DOIs
StatePublished - 23 Jun 2008

Keywords

  • Auger
  • Auger dynamics
  • Auger recombination
  • Clusters
  • Electron relaxation dynamics
  • Electronic excited state relaxation
  • Excited state relaxation dynamics
  • Mercury
  • Photoelectron imaging
  • Time-resolved photoelectron imaging

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