Space-charge dielectric properties of water and aqueous electrolytes

Author

Duffy, P. ; Frood, D.G. ; Gallagher, T.J.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. Coll. Dublin, Ireland

fYear

1993

fDate

19-23 Jul 1993

Firstpage

140

Lastpage

144

Abstract

The dielectric properties of water of various degrees of purity are measured at room temperature between 20 Hz and 1 MHz. Dielectric properties of deionized water containing different concentrations of copper sulphate are also presented. The results are in fair agreement with Coelho´s theory of the space charge response of a medium containing mobile ions only when an additional contribution to the permittivity arising from DC conduction in the electrolyte is taken into account. This condition is consistent with the assumption that the carriers are free electrons of high mobility and low number density. It is noted that this is a very surprising result

Keywords

water; 20 Hz to 1 MHz; 293 K; Coelho´s theory; DC conduction; H₂O; aqueous electrolytes; free electrons; mobility; number density; permittivity; space charge response; water; Conductivity; Copper; Dielectric measurements; Electrodes; Frequency; Impurities; Permittivity measurement; Polarization; Temperature measurement; Water;

fLanguage

English

Publisher

ieee

Conference_Titel

Conduction and Breakdown in Dielectric Liquids,1993., ICDL '93., IEEE 11th International Conference on

Conference_Location

Baden-Dattwil

Print_ISBN

0-7803-0791-7

Type

conf

DOI

10.1109/ICDL.1993.593929

Filename

593929