Publication detail

Under Water Discharge in Bubbles in Very Low Conductive Solutions

VANRAES, P. NIKIFOROV, A. LEYS, C. NĚMCOVÁ, L. KRČMA, F.

Original Title

Under Water Discharge in Bubbles in Very Low Conductive Solutions

Type

conference paper

Language

English

Original Abstract

This contribution presents experimental results obtained with underwater electric discharge created in rising gas bubbles. This discharge configuration is relatively new, and combines both gas and liquid phase discharges. The properties and mechanism of bubble discharge generation were investigated using a single pulsed high voltage. The electric discharge was generated in a pin-to-plate electrode configuration submerged in deionized water with conductivity of 2.0-5.0 microS/m. The gas bubbles were formed by injecting the gas through a glass filter disc at the bottom of the water tank. Air and helium were used as inlet gas. A spark gap pulse generator triggered the single negative high voltage pulses with rise times below 10 ns and peak voltages of 15-20 kV. The bubble position at the moment of high voltage application was accidental. The measured spectra were qualitatively reproducible, but significant quantitative differences were observed. We observed two types of discharge inside the bubble: delayed and direct spark discharge. The emission spectra of these two discharge kinds were qualitatively very similar.

Keywords

Underwater discharge, bubble discharge, pulsed voltage, spectral characterization, electrical characterization

Authors

VANRAES, P.; NIKIFOROV, A.; LEYS, C.; NĚMCOVÁ, L.; KRČMA, F.

RIV year

2011

Released

14. 1. 2011

Location

Bratislava

ISBN

978-80-89186-77-8

Book

Book of Contributed Papers: 18th Symposium on Application of Plasma Processes and Workshop on Plasmas as a Planetary Atmospheres Mimics

Pages from

88

Pages to

92

Pages count

5

BibTex

@inproceedings{BUT36688,
  author="Peter {Vanraes} and Anton {Nikiforov} and Christophe {Leys} and Lucie {Němcová} and František {Krčma}",
  title="Under Water Discharge in Bubbles in Very Low Conductive Solutions",
  booktitle="Book of Contributed Papers: 18th Symposium on Application of Plasma Processes and Workshop on Plasmas as a Planetary Atmospheres Mimics",
  year="2011",
  pages="88--92",
  address="Bratislava",
  isbn="978-80-89186-77-8"
}