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In the framework of macroscopic continuous medium approach, we studied theinteraction between a fast-moving charged particle and dielectric orsemiconducting media with low energy electrically active excitations. Theexcitations contribute to frequency dispersion of the media dielectricpermittivity. Two types of processes induced by a moving charged particle areconsidered: electron-hole generation under interband transitions and excitationof polar optical phonons. For both processes we calculated and analyzed thetime- and space-dependent electric potential generated by the charged particle,polarization of the media, energy losses of the particle and other importantconstituents of the interaction patterns. Obtained results can contribute todeeper understanding of the charged particle beams interaction with asemiconducting medium, as well as may be useful for versatile applications ofcharged beams.

The free path and the generation rate of a fast-moving electron interacting with a dielectric media