Nonlinear dielectric constant of nonpolar fluids

Abstract : We study the third-order electrical susceptibility of a fluid of nonpolar spherical molecules with linear polarizability and cubic hyperpolarizability. In the electrostatic dipole approximation, we derive an expression for the third-order susceptibility, which allows its evaluation from a property of the linear system. To second order in the linear polarizability, the correction to a mean field approximation, obtained by Buckingham, may be related to the correction to the Clausius-Mossotti formula for the linear dielectric constant. We present numerical results, obtained by computer simulation, for a system of hard spheres.
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Submitted on : Wednesday, June 19, 2019 - 9:46:38 AM
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K. Hinsen, A. Bratz, B. Felderhof. Nonlinear dielectric constant of nonpolar fluids. Journal of Chemical Physics, American Institute of Physics, 1992, 97 (12), pp.9299-9302. ⟨10.1063/1.463305⟩. ⟨hal-02159857⟩



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