ON THE CALCULATION OF THE MACROSCOPIC RELAXATION-TIME FROM THE LANGEVIN EQUATION FOR A DIPOLE IN A CAVITY IN A DIELECTRIC MEDIUM

被引:4
作者
COFFEY, WT [1 ]
KALMYKOV, YP [1 ]
机构
[1] RUSSIAN ACAD SCI,INST RADIO ENGN & ELECTR,FRYAZINO 141120,RUSSIA
关键词
D O I
10.1016/0301-0104(93)80074-J
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A generalisation of Onsager's theory of the static permittivity of a polar fluid to time-dependent fields is presented by direct averaging of the nonlinear Langevin equation involving the Onsager reaction field for the rotation of a dipole (excluding inertial effects) in a cavity in a dielectric medium. The complex dielectric permittivity calculated in a definite approximation differs from the results of earlier investigations but the equation so derived for the macroscopic relaxation time coincides with the Powles formula.
引用
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页码:165 / 172
页数:8
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