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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Havriliak–Negami relaxation ： ウィキペディア英語版 Havriliak–Negami relaxation Havriliak–Negami relaxation is an empirical modification of the Debye relaxation model, accounting for the asymmetry and broadness of the dielectric dispersion curve. The model was first used to describe the dielectric relaxation of some polymers,〔 〕 by adding two exponential parameters to the Debye equation: :$$ \hat(\omega) = \varepsilon_ + \frac}, where $\backslash varepsilon\_$ is the permittivity at the high frequency limit, $\backslash Delta\backslash varepsilon\; =\; \backslash varepsilon\_-\backslash varepsilon\_$ where $\backslash varepsilon\_$ is the static, low frequency permittivity, and $\backslash tau$ is the characteristic relaxation time of the medium. The exponents $\backslash alpha$ and $\backslash beta$ describe the asymmetry and broadness of the corresponding spectra. Depending on application, the Fourier transform of the stretched exponential function can be a viable alternative that has one parameter less. For $\backslash beta\; =\; 1$ the Havriliak–Negami equation reduces to the Cole–Cole equation, for $\backslash alpha=1$ to the Cole–Davidson equation. == Mathematical properties == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Havriliak–Negami relaxation」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.