Publication detail

Generation of dc pin-hole discharges in liquids: comparison of discharge breakdown in diaphragm and capillary configuration

KOZÁKOVÁ, Z. KRČMA, F. VAŠÍČEK, M. HLAVATÁ, L. HLOCHOVÁ, L.

Original Title

Generation of dc pin-hole discharges in liquids: comparison of discharge breakdown in diaphragm and capillary configuration

Type

journal article in Web of Science

Language

English

Original Abstract

Electrical discharges in liquids can be generated in several electrode configurations; one of them is called as pin-hole. The discharge is created inside a small orifice in the dielectric barrier connecting two chambers filled by any conductive solution. Each chamber contains one electrode. Based on the orifice length/diameter ratio, the discharge is called as capillary or diaphragm. The present paper gives the first detailed observation of the dependence of discharge creation on the orifice shape for selected NaCl solution conductivities (250-1000 microS/cm). As a dielectric barrier, ceramic discs with thickness varying from 0.3 to 1.5 mm were used. Diameter of one central pin-hole was in the range of 0.25-1.00 mm. The non-pulsing DC high voltage up to 2 kV with power up to 300 W was used for the presented study. The bubble theory of the discharge generation was confirmed at the set conditions.

Keywords

discharges in liquids, pin-hole discharge, electric measurements, bubble formation, pin-hole dimensions

Authors

KOZÁKOVÁ, Z.; KRČMA, F.; VAŠÍČEK, M.; HLAVATÁ, L.; HLOCHOVÁ, L.

RIV year

2015

Released

7. 4. 2015

ISBN

1434-6060

Periodical

European Physical Journal D

Year of study

69

Number

4

State

Federal Republic of Germany

Pages from

100-1

Pages to

100-9

Pages count

9