Affordable Access

The Valence Band of Free K Clusters Studied by Photoelectron and Auger Spectroscopies

Authors
Publisher
Springer
Publication Date
Keywords
  • 73.22.-F Electronic Structure Of Nanoscale Materia
  • 36.40.-C Atomic And Molecular Clusters
  • 79.60.-I Photoemission And Photoelectron Spectra
  • Physics And Astronomy

Abstract

The valence states of free neutral potassium clusters produced by a gas aggregation source were probed by synchrotron radiation based photoelectron spectroscopy. The first ionization energy (IE) of the clusters was determined to be 10% larger than the work function of bulk potassium. Using electrostatic concepts and the IE, the mean size of the clusters was estimated to be ≈2000 atoms. Further information about the valence band was provided by investigation of the Auger process initiated by the ionization of the 3p level with a subsequent emission of an Auger electron from the valence band (M2,3VV). Plasmon satellites were observed in Auger spectra of free metal clusters.

There are no comments yet on this publication. Be the first to share your thoughts.