D. Boda et al., INFLUENCE OF STATIC ELECTRIC-FIELD ON THE VAPOR-LIQUID COEXISTENCE OFDIPOLAR SOFT-SPHERE FLUIDS, Journal of the Chemical Society. Faraday transactions, 91(5), 1995, pp. 889-894
Citations number
39
Categorie Soggetti
Chemistry Physical","Physics, Atomic, Molecular & Chemical
The influence of a static homogeneous electric field on the vapour-liq
uid equilibrium of dipolar soft-sphere fluids has been studied by the
Gubbins-Pople-Stell perturbation theory. The thermodynamic properties
of the fluid as functions of the field strength were derived from the
Helmholtz energy containing the field-dependent relative permittivity.
The dielectric saturation was studied by a perturbation theoretical t
reatment of the Kirk-wood equation. Our calculations can yield a weak
negative saturation. It was found that the critical quantities increas
e, while the temperature range;of the phase coexistence narrows with t
he field strength. A comparison between our electrostriction results a
nd simulation data shows reasonable agreement at low field strengths.