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Metal Clusters: How Many Atoms are Required for Thermionic Emission ?

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Physics and Chemistry of Finite Systems: From Clusters to Crystals

Part of the book series: NATO ASI Series ((ASIC,volume 374))

Abstract

We observe thermionic emission from free refractory metal clusters Wn, n ≥ 5 and Tan, n ≥ 4, following excitation by a Q-switched Nd:YAG laser at its 2nd, 3rd and 4th harmonic. The ion yield from this process, which extends up to 5 µs for large n, dominates over prompt multiphoton ionization if the laser fluence is chosen properly. The appearance of pronounced wavelength dependent intensity anomalies in the size dependence of the yield is traced to the quantization of the attainable excess energy in the clusters.

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Author information

Authors and Affiliations

  1. Fakultät für Physik, Universität Konstanz, W-7750, Konstanz, Germany

    T. Leisner, K. Athanassenas, D. Kreisle & E. Recknagel

  2. Dept. of Physics, University of New Hampshire, Durham, NH, 03824, USA

    O. Echt

Authors
  1. T. Leisner
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  2. K. Athanassenas
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  3. O. Echt
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  4. D. Kreisle
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  5. E. Recknagel
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Editor information

Editors and Affiliations

  1. Department of Physics, Virginia Commonwealth University, Richmond, VA, USA

    P. Jena , S. N. Khanna  & B. K. Rao ,  & 

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© 1992 Springer Science+Business Media Dordrecht

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Leisner, T., Athanassenas, K., Echt, O., Kreisle, D., Recknagel, E. (1992). Metal Clusters: How Many Atoms are Required for Thermionic Emission ?. In: Jena, P., Khanna, S.N., Rao, B.K. (eds) Physics and Chemistry of Finite Systems: From Clusters to Crystals. NATO ASI Series, vol 374. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-2645-0_28

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  • DOI: https://doi.org/10.1007/978-94-017-2645-0_28

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-017-2647-4

  • Online ISBN: 978-94-017-2645-0

  • eBook Packages: Springer Book Archive

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