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Proceedings Paper

Collective effects in electron impact ionization of metal clusters
Author(s): Leonid G. Gerchikov; Andrey N. Ipatov; Roman G. Polozkov; Andrey V. Solovyov
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Paper Abstract

In this work we report on the results of many-body quantum treatment for the inelastic scattering of fast electrons on metal clusters in the range of energies transferred above the ionization threshold. In this energy range, many-electron collective excitations provide significant contribution to the cross section. Above the cluster ionization threshold, the volume plasmon is the most significant many-electron excitation because its resonance frequency is located above the ionization threshold. We performed calculation of the electron inelastic cross sections using two different approaches. First, we calculated the cross section in the RPAE with the Hartree-Fock jellium model wave functions, accounting for both all single particle and collective excitations in the cluster. In order to extract contribution of plasmon excitations, we have also obtained the cross section in the plasmon resonance approximation.

Paper Details

Date Published: 1 February 2001
PDF: 9 pages
Proc. SPIE 4348, Fourth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (1 February 2001); doi: 10.1117/12.417630
Show Author Affiliations
Leonid G. Gerchikov, St. Petersburg State Technical Univ. (Russia)
Andrey N. Ipatov, St. Petersburg State Technical Univ. (Russia)
Roman G. Polozkov, St. Petersburg State Technical Univ. (Russia)
Andrey V. Solovyov, A.F. Ioffe Physico-Technical Institute (Russia)


Published in SPIE Proceedings Vol. 4348:
Fourth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering
Alexander I. Melker, Editor(s)

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