Electron collision rate and multiquantum transitions in solids
Multiquantum integral kinetic equation for the longitudinal complex dielectric function is derived. Heisenberg equation of motion and fluctuation-dissipation theorem has been used to calculate multiplasmon transmission electron energy loss spectra. Strong interaction between high-energy electrons...
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| Autores principales: | , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
D.Ghitu Institute of Electronic Engineering and Nanotechnologies
2008
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/4abb0c52957d46b9bf6c9f7186e90569 |
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| Sumario: | Multiquantum integral kinetic equation for the longitudinal complex dielectric function
is derived. Heisenberg equation of motion and fluctuation-dissipation theorem has been used
to calculate multiplasmon transmission electron energy loss spectra. Strong interaction between high-energy electrons penetrating the solid state and plasma of valence electrons is
taken into account. It is shown that average number of high-frequency plasmons generated in
every collision process is more than one for typical values of metal parameters. It is obtained
that excitation of a good few of plasmons is simultaneous event. Calculated multiplasmon
structure of electron energy loss spectra coincides with experimental one.
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