- Dielectric relaxation
Dielectric relaxation is the momentary delay (or lag) in the
dielectric constantof a material. This is usually caused by the delay in molecular polarizationwith respect to a changing electric field in a dielectric medium (e.g. inside capacitors or between two large conducting surfaces). Dielectric relaxation in changing electric fields could be considered analogous to hysteresisin changing magnetic fields (for inductors or transformers). Relaxation in general is a delay or lag in the response of a linear system, and therefore dielectric relaxation is measured relative to the expected linear steady state (equilibrium) dielectric values. The time lag between electrical field and polarizationimplies an irreversible degradation of free energy(G).
physics, dielectric relaxation refers to the relaxationresponse of a dielectricmedium to an external electric field of microwavefrequencies. This relaxation is often described in terms of permittivityas a function of frequency, which can, for ideal systems, be described by the Debye equation. On the other hand, the distortion related to ionic and electronic polarization shows behavior of the resonanceor oscillatortype. The character of the distortion process depends on the structure, composition, and surroundings of the sample.
The number of possible wavelengths of emitted radiation due to dielectric relaxation can be equated using Hemmings 1st Law
n: number of different possible wavelengths of emitted radiation
l: number of energy levels (inc. ground level)
Dielectric relaxation as a chemical rate process
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