Demetallization of alkali/alkali-halide clusters: Impact-induced fragmentation of cubic Na14F+12

Rainer D. Beck, Pamela St. John, Margie L. Homer, Robert L. Whetten

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32 Scopus citations


The impact of the cubic excess-electron cluster Na14F+12 against a graphite surface at low energies (0-20 eV) results selectively in the formation of Na13F+12. This fragmentation channel is interpreted as Na(0) desorption from the energized F-center cluster, confirming the prediction of such a low-energy channel [U. Landman, D. Scharf and J. Jortner, Phys. Rev. Letters 54 (1985) 1860] and validating the use of Na-desorption energies in calculating the abundance variations in neutral, excess-electron clusters [E.C. Honea, M.L. Homer and R.L. Whetten., Phys. Rev. Letters 63 (1989) 394]. The resemblance of the fragmentation patterns of Na14F+12 to that of Na13F+12 at higher energy impact (25-60 eV) indicates that the structure of the nascent Na13 F+12 generated by impact-heating is the same as that formed in the cold jet.

Original languageEnglish (US)
Pages (from-to)122-128
Number of pages7
JournalChemical Physics Letters
Issue number1-2
StatePublished - Nov 29 1991
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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