Analysis of Gas-Phase Clusters Made from Laser-Vaporized Icosahedral Al−Pd−Mn Barrow, J. Sordelet, D. Thiel, Patricia Besser, Matthew Jenks, Cynthia Thiel, Patricia Rexer, E. Riley, S.
dc.contributor.department Chemistry 2018-02-13T12:52:57.000 2020-06-30T01:19:39Z 2020-06-30T01:19:39Z Tue Jan 01 00:00:00 UTC 2002 2013-06-26 2002-10-10
dc.description.abstract <p>An icosahedral Al−Pd−Mn quasicrystal sample is laser vaporized to form metal clusters by gas aggregation. The clusters are subsequently laser ionized and mass analyzed in a time-of-flight mass spectrometer. The mass spectra show cluster compositions which are qualitatively similar to that of the sample. This is consistent with a kinetically controlled cluster growth process. Cluster thermodynamic stability is probed by multiphoton ionization/fragmentation, which induces primarily Al and Mn loss. The resulting spectra are composed of a series of Pd-rich Al−Pd clusters. The average cluster composition is 60 (±1)% Pd. This composition is close to a known eutectic in the Al−Pd system. When manganese is seen on these clusters, it is always in units of Mn3. These results are discussed in terms of relative binding strengths in the Al−Pd−Mn alloy system.</p>
dc.description.comments <p>Posted with permission from <em>The Journal of Physical Chemistry A</em> 106, no. 40 (2002): 9204–9208, doi:<a href="" target="_blank">10.1021/jp025662k</a>. Copyright 2002 American Chemical Society.</p>
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dc.identifier.articleid 1048
dc.identifier.contextkey 4259776
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dc.language.iso en
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dc.source.uri 10.1021/jp025662k
dc.subject.disciplines Physical Chemistry
dc.subject.keywords Ames Laboratory
dc.title Analysis of Gas-Phase Clusters Made from Laser-Vaporized Icosahedral Al−Pd−Mn
dc.type article
dc.type.genre article
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relation.isOrgUnitOfPublication 42864f6e-7a3d-4be3-8b5a-0ae3c3830a11
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