# Revisiting the Concept of Relaxation/ Retardation of Electric Modulus Dielectric Permittivity and Determination of Normalized Electric Field Decay Function (with Several Detailed Derivations of Formulas)

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## Revisiting the Concept of Relaxation/ Retardation of Electric Modulus Dielectric Permittivity and Determination of Normalized Electric Field Decay Function (with Several Detailed Derivations of Formulas)

This affiliate contains various derivations of formulas for the Relaxation/Retardation of Electric Modulus, Dielectric Permittivity and analytical pattern of determination of Electric Field Decay Function from the Frequency Dispersion experiments. Here we explain and edit/recall the relaxation or delay process, where the dielectric permittivity or the energetic modulus responds in time to outside perturbation (excitation). The entertainment is phenomena place the response to the outside perturbation decays monotonically, and delay is phenomena where skilled is monotonic increase of the response to the provocation. The phenomena are ruled by the normalized decay function. We further revise the idea of AC analysis i.e. the sinusoidal or constant state analysis, place the excitation is in the form of sinusoidal harmonious function. In this process one obtains the commonness dispersion data and produce various drawings of frequency dispersal by plotting the absolute and imaginary parts of the response function vis-à-vis the repetitiveness. This AC analysis is Impedance Spectroscopy or Dielectric Spectroscopy. The phase deliberates on by virtue of what to extract the decay function (that is function sooner than expected) from these frequency dispersal experimental data (of the dielectric permittivity and or the energetic modulus). This chapter further derives in detail the miscellaneous important verbalizations pertaining to dispersion of the dielectric permittivity and energetic modulus. In general physics the response is pronounced to be entertainment dynamics either it is decay (relaxation) or growth (delay) phenomena. This episode primarily focuses on Debye type entertainment that enables understanding of miscellaneous other types of complex-relaxation processes of non-Debye types. The particularized derivations of this affiliate give insight of the classic concept of Electric Field entertainment/retardation process.

Author(s) Details:

Shantanu Das,
Bhabha Atomic Research Center (BARC), Mumbai, India.