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Stability patterns of multiphoton ionized YAun clusters

  • H. Weidele
  • S. Bouckaert
  • W. Bouwen
  • F. Vanhoutte
  • P. Lievens
  • R. E. Silverans
Conference paper

Abstract

Binary Y m Au n metal clusters (m ≤ 5, n ≤ 65) are produced by a laser vaporization source. The clusters are ionized and excited by multiphoton absorption (E hv = 6.4 eV) and mass abundance spectra were taken by time-of-flight mass spectrometry. The mass spectra of the YAu n ions reveal distinct intensity steps at n = 2, 6, 16, 32, and 56 which correspond for n > 2 to the well known electronic shell model, provided that the yttrium atom contributes three free electrons to the metallic binding of the gold clusters.

PACS

36.40.Qv Stability and fragmentation of clusters 36.40.Cg Electronic and magnetic properties of clusters 

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Copyright information

© Springer-Verlag Italia 1999

Authors and Affiliations

  • H. Weidele
    • 1
  • S. Bouckaert
    • 1
  • W. Bouwen
    • 1
  • F. Vanhoutte
    • 1
  • P. Lievens
    • 1
  • R. E. Silverans
    • 1
  1. 1.Laboratorium voor Vaste-Stoffysica en MagnetismeK.U. LeuvenLeuvenBelgium

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