Monte-Carlo calculations based on the Fröhlich-theory of electron-LO-phonon interaction are used to investigate the breakdown behaviour of electrons in SiO2, Al2O3, Ta2O5, and ZnS-layers and provide transport parameters like electron mobility, saturation drift velocity, breakdown field strength, and the following increase of the mean electron energy with field strength and drift distance. Electron field emission measurements from Au-SiO2-n+Si layer systems into vacuum maintain the MC-calculations and do not indicate an electron energy stabilization at few eV as has been shown recently by strong acoustic phonon coupling but give evidence for high probability of intrinsic avalanching in SiO2 below 10 MV/cm.
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Fitting et al. (1986) studied this question.
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