Abstract

This chapter analyses the effects produced by a time-varying electric field in the electron kinetics. The behaviour exhibited by the electron velocity distribution function is controlled by two characteristic relaxation frequencies, one for energy and another for momentum transfer, when compared with the field frequency. The cases of high-frequency (HF) and radio-frequency (RF) fields are analysed separately, since they correspond to situations in which no time-modulation and large time-modulation exist, respectively, in the isotropic part of the electron velocity distribution. This chapter also analyses the electron kinetics under the simultaneous effects of a HF electric field and a stationary external magnetic field, with leads to electron cyclotron resonance (ECR) when the electron cyclotron frequency equals the field-frequency.

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