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Observation of electronic and geometric shell structures of small silver clusters

Electron impact ionization/dissociation of size selected silver clusters
  • S. Krückeberg
  • G. Dietrich
  • K. Lützenkirchen
  • L. Schweikhard
  • C. Walther
  • J. Ziegler
Conference paper

Abstract

Singly charged silver clusters Open image in new window in the size range n = 17 to n = 78 have been captured and stored in a Penning trap, size selected and subjected to an electron beam which leads to further ionization as well as dissociation. The resulting abundance spectra of doubly and triply charged clusters show several features: (1) A critical size for the production of doubly charged clusters which can be understood in terms of the decay pathways as previously investigated by collision induced dissociation, (2) an odd-even alternation in the abundance of singly and doubly charged clusters which inverses sign with change of charge state, (3) prominent signals for particular doubly and triply charged species that indicate both electronic and geometric influences on the clusters’ stability.

PACS

36.40.Qv Stability and fragmentation of clusters 36.40. Wa Charged clusters 

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Copyright information

© Springer-Verlag Italia 1999

Authors and Affiliations

  • S. Krückeberg
    • 1
    • 3
  • G. Dietrich
    • 2
    • 4
  • K. Lützenkirchen
    • 2
    • 5
  • L. Schweikhard
    • 1
  • C. Walther
    • 2
    • 6
  • J. Ziegler
    • 1
    • 7
  1. 1.Institut für PhysikJohannes Gutenberg-UniversitätMainzGermany
  2. 2.Institut für KernchemieJohannes Gutenberg-UniversitätMainzGermany
  3. 3.The Rowland Institute for ScienceCambridgeUSA
  4. 4.Landesbank Rheinland-PfalzMainzGermany
  5. 5.Chimie NucleaireInstitut de Recherches SubatomiquesStrasbourgFrance
  6. 6.Forschungszentrum Karlsruhe GmbHINEKarlsruheGermany
  7. 7.Deutsche Bank AGEschbornGermany

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