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

doi:10.1016/0009-2614(91)90495-U

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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Abstract

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 language	English (US)
Pages (from-to)	122-128
Number of pages	7
Journal	Chemical Physics Letters
Volume	187
Issue number	1-2
DOIs	https://doi.org/10.1016/0009-2614(91)90495-U
State	Published - Nov 29 1991
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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title = "Demetallization of alkali/alkali-halide clusters: Impact-induced fragmentation of cubic Na14F+12",

abstract = "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.",

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year = "1991",

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doi = "10.1016/0009-2614(91)90495-U",

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T1 - Demetallization of alkali/alkali-halide clusters

T2 - Impact-induced fragmentation of cubic Na14F+12

AU - Beck, Rainer D.

AU - St. John, Pamela

AU - Homer, Margie L.

AU - Whetten, Robert L.

PY - 1991/11/29

Y1 - 1991/11/29

N2 - 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.

AB - 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.

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JF - Chemical Physics Letters

IS - 1-2

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

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