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Estimating the energy of electric breakdown in air gap between electrolyte and metal electrode
A. M. Orlov,
I. O. Yavtushenko,
M. V. Churilov Ulyanovsk State University
Abstract:
The influence of induced electric charge (localized on the surface of a suspended copper rod) on the formation of a protrusion (Taylor cone) on the inducing liquid (aqueous solution) surface is considered. At an applied voltage of
$U\le$ 12 kV, the protrusion height in the interval of pre-breakdown voltages
$(U<U_P)$ is limited by the electric field strength. At
$U>U_P$, the growth of protrusion is terminated by an electric discharge, which drives the liquid to oscillate in a broad range of applied voltages
$U$ at almost constant multiple frequencies
$f=f_0n$, which are resonantly switched at certain fixed
$U$ values. By measuring the amount of evaporated liquid, the energy (27.8
$\times$ 10
$^{-3}$ J) and current (64.9 A) of single discharge were evaluated and the electric capacitance (7.6
$\times$ 10
$^{-10}$ F) of a system comprising the water surface and suspended copper electrode was estimated. Serial connection of an additional capacitor (100
$\mu$F) to the copper electrode with induced electric charge leads to a threefold increase in these parameters.
Received: 16.02.2010
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