نتایج جستجو برای: Kirkwood Correlation Factor

تعداد نتایج: 1197175  

Journal: :physical chemistry and electrochemistry 0

experimental results of dielectric investigations for binary mixtures of 2, 3-butanediol, 2, 3-bd, in2-ethyl-1-hexanol, 2eh, were reported for various mole fractions and temperatures (298.2-308.2) kand they were used to calculate dielectric parameters such as kirkwood correlation factor, excesspermittivity and bruggeman parameter. these parameters were used to carry out temperaturedependent die...

Journal: :Physical chemistry chemical physics : PCCP 2011
João Carlos R Reis T P Iglesias

Two approaches for applying the Onsager-Kirkwood-Fröhlich equation to liquid mixtures are revisited at the light of recent developments leading to the estimation of relative permittivities and refractive indices of thermodynamically ideal liquid mixtures. From the one-liquid approach, the squared permanent dipole moment of the mixture molecular-equivalent species M is demonstrated to be a mole-...

Experimental results of dielectric investigations for binary mixtures of 2, 3-butanediol, 2, 3-BD, in2-ethyl-1-hexanol, 2EH, were reported for various mole fractions and temperatures (298.2-308.2) Kand they were used to calculate dielectric parameters such as Kirkwood correlation factor, excesspermittivity and Bruggeman parameter. These parameters were used to carry out temperaturedependent die...

2015
Y S Joshi

A dielectric measurement for the aqueous solutions at lower frequencies (20Hz to 2MHz) has been carried out in frequency domain using Agilient Precision LCR meter (E4980A). The dielectric permittivity spectra of over entire concentrations with aqueous solutions are measured at 25 ̊C. From observed spectra, static dielectric constants (ε0) have been determined. Dielectric Spectroscopy is especial...

Journal: :The Journal of chemical physics 2004
A Singer

Using a variational formulation, we derive the Kirkwood superposition approximation for systems at equilibrium in the thermodynamic limit. We define the entropy of the triplet correlation function and show that the Kirkwood closure brings the entropy to its maximal value. This approach leads to a different interpretation for the Kirkwood closure relation, usually explained by probabilistic cons...

Journal: :Ukrainian Journal of Physics 2022

We have developed and established the TDR technique that provides information about dielectric permittivity in frequency range from 10 MHz to 30 GHz. The for aqueous solutions can be explained by using a hydrogen-bond model assuming formation of hydrogen bonds between water–water water–solute pairs. orientational correlation neighbouring molecules due is determined terms Kirkwood factor. number...

Journal: :The Journal of chemical physics 2016
David P Shelton

Hyper-Rayleigh scattering (HRS) is sensitive to long-range molecular orientation correlation in isotropic liquids composed of dipolar molecules. Measurements of the polarization, angle, and spectral dependence for HRS from liquid nitrobenzene (NB) are analyzed to determine the NB molecular orientation correlations at long range. The longitudinal and transverse orientation correlation functions ...

Journal: :International journal of applied thermodynamics 2022

Experimental dielectric constants at (293.15, 298.15, 303.15) K, densities and refractive indices 293.15 K are reported for water- ethanol n-butanol binary mixture systems over the entire volume fraction range atmospheric pressure. From experimental data, excess constant, effective Kirkwood correlation factor, Bruggeman factor from density index data various parameters their properties like den...

Journal: :Letters in Mathematical Physics 2023

The Kirkwood–Salzburg type equations are considered as nonlinear for the correlation functions of canonical ensemble. Their solutions built in form expansions powers density.

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