Cluster ion emission in the interaction of slow highly charged ions with surfaces |
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| Authors: | T Schenkel AV Barnes AV Hamza DH Schneider |
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| Institution: | (1) University of California Lawrence Livermore National Laboratory Livermore, CA 94551, USA, US |
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| Abstract: | Cluster ion emission from a variety of surfaces upon impact of highly charged ions is investigated by time-of-flight secondary
ion mass spectrometry. The yield of cluster ions as a function of cluster size for and surface follow a power law decline with exponent approaching the -2 limit of the ”equilibrium” and ”shock wave” cluster emission
models. While the decline of the cluster ion emission with cluster size is an exponential decay for highly oriented pyrolytic
graphite upon impact, the decline is more gradual than for impact, such that at the relative cluster yield is 1000 times higher.
Received: 22 April 1997 / Revised: 29 December 1997 / Accepted: 19 January 1998 |
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| Keywords: | PACS 36 40 c Atomic and molecular clusters - 61 46 +w Clusters nanoparticles and nanocrystalline materials - 82 65 Yh Other surface and interface chemical processes |
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