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Neutral Mass-Selected Lead Cluster Beams

Published online by Cambridge University Press:  28 February 2011

M. Abshagen ,
F. Träger ,
J. Kowalski ,
M. Meyberg ,
G. zu Putlitz  and
J. Slaby
M. Abshagen
Affiliation:
Fachbereich Physik der Universität Kassel, Heinrich-Plett-Straße 40, D-3500 Kassel, Germany
F. Träger
Affiliation:
Fachbereich Physik der Universität Kassel, Heinrich-Plett-Straße 40, D-3500 Kassel, Germany
J. Kowalski
Affiliation:
Physikalisches Institut der Universität Heidelberg, Philosophenweg 12, D-6900 Heidelberg, Germany
M. Meyberg
Affiliation:
Physikalisches Institut der Universität Heidelberg, Philosophenweg 12, D-6900 Heidelberg, Germany
G. zu Putlitz
Affiliation:
Physikalisches Institut der Universität Heidelberg, Philosophenweg 12, D-6900 Heidelberg, Germany
J. Slaby
Affiliation:
Institute of Experimental Physics, Warsaw University, Hoza 69, 00–681 Warsaw, Poland
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Abstract

Experiments are described which illustrate that resonant neutralization of mass-selected cluster ions provides a universal method to produce neutral mass-selected metal cluster beams. Specifically, lead cluster ions, Pbn+ with n d 12, were neutralized by charge exchange reactions in atomic sodium and other target materials. Absolute charge exchange cross sections are on the order of 40 Å2 and up to 30% of the incident ions were neutralized. Possible fragmentation of the clusters associated with neutralization was investigated by translational spectroscopy. No indication of fragmentation was found for resonant electron transfer with atomic Na as target gas.. Thus, neutral metal cluster beams with ultra-narrow size distribution are produced. Deposition of such size-selected metal clusters on substrates opens new perspectives in materials science.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 206: Symposium G – Clusters and Cluster-Assembled Materials , 1990 , 13
Copyright
Copyright © Materials Research Society 1991

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References

REFERENCES

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