Open AccessDIFFUSION AND DIELECTRIC SPECTROSCOPY OF SPACE CHARGES IN INSULATING LIQUIDS
Author(s) -
Jingde Li,
Deng Re-Zhong,
Min Chen,
Feng Zheng
Publication year - 1997
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.46.155
Subject(s) - dielectric spectroscopy , dielectric , materials science , spectroscopy , polarization (electrochemistry) , diffusion , space charge , condensed matter physics , mean squared displacement , displacement (psychology) , space (punctuation) , molecular physics , chemical physics , electrode , physics , molecular dynamics , chemistry , thermodynamics , quantum mechanics , electron , electrochemistry , optoelectronics , psychology , psychotherapist , linguistics , philosophy
The diffusion theory shows that the displacement of space charges leads to a slow polarization effect;the response time is proportional to the square of the distance between the electrodes.The theoretical results are confirmed in experiments.A method of differential time domain spectroscopy is used to study the existence and movement of space charges in C6H6 and CH3 (CH2)n CH3.There are one fast component and two slow components in these compounds.Their response times and strength give information about the molecular length and motion at various temperatures.This differential dielectric spectroscopy in the time domain is a very sensitive method for trace analysis of inpurities in highly insulating liquids.