Abstract
The distribution of electrons emitted from AlAl 2O 3Au sandwich cathodes has been studied. The measurements were performed with the half-spherical collector divided into several concentric zones. In addition to the usual angular and energy distributions of emitted electrons, the total energy distribution into single collector zones was measured at various leakage voltages and temperatures. The experimental energy angular distributions suggest that the dominant scattering process in the aluminium oxide is the interaction of hot electrons with optical phonons and traps.
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