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Cluster cations ejected from liquid metal ion source: alkali metals (Li, Na) and group IV elements (Si, Ge, Sn, Pb)

  • Stability And Fragmentation
  • Published:
Zeitschrift für Physik D Atoms, Molecules and Clusters

Abstract

Cluster abundance of Li + n (n≤19), Na + n (n≤25), Si z+ n (n≤8 forz=1, 3≤n≤7 forz=2), Ge z+ n (n≤11 forz=1, 3≤n≤9 forz=2,n=4 forz=3), Sn z+ n (n≤7 forz=1, 3≤n≤9 forz=2,n=4 forz=3) and Pb z+ n (n≤6 forz=1, 5≤n≤7 forz=2) ejected from a liquid metal ion source has been investigated by mass spectrometry. The abundance spectra of alkali metal clusters showed distinct maxima and steps atn=3, 7, 9, 13 and 19 for Li, and atn=3, 5, 11, 13 and 19 for Na. Mass spectra of Si, Ge and Sn clusters were very similar each other, showing intensity drops aftern=4 and 6 (and alson=10 for Ge) for singly charged clusters. The magic numbers observed are discussed in terms of stability of charged clusters.

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Authors and Affiliations

  1. Department of Applied Physics, Nagoya University, 464-01, Nagoya, Japan

    Y. Saito

  2. Department of Electrical and Electronic Engineering, Toyohashi University of Technology, 440, Toyohashi, Japan

    T. Noda

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  1. Y. Saito
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  2. T. Noda
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Saito, Y., Noda, T. Cluster cations ejected from liquid metal ion source: alkali metals (Li, Na) and group IV elements (Si, Ge, Sn, Pb). Z Phys D - Atoms, Molecules and Clusters 12, 225–227 (1989). https://doi.org/10.1007/BF01426943

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  • DOI: https://doi.org/10.1007/BF01426943

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