Free carrier concentrations, definition

Classically, the experimental curve interpretation is often limited to the definition of a distribution function in which the Debye-type relaxation superposition is accounted for by two parameters a and jS. From this description, we learn nothing about the physical processes involved this is often the relaxation frequency zone which permits connection of the observed evolutions to a particular polarisation phenomenon. Moreover, for materials with large free carrier concentration, the conduction and polarisation effects are separated in an arbitrary way, assuming that the contribution to the conduction phenomena is limited to a term e" conduction = (Tdc/cyto over the whole frequency range. 

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