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Title: Dynamic characteristics of gas-water interfacial plasma under water

Abstract

Gas-water interfacial plasmas under water were generated in a compact space in a tube with a sandglass-like structure, where two metal wires were employed as electrodes with an applied 35 kHz ac power source. The dynamic behaviors of voltage/current were investigated for the powered electrode with/without water cover to understand the effect of the gas-water interface. It is found that the discharge exhibits periodic pulsed currents after breakdown as the powered electrode is covered with water, whereas the electrical current reveals a damped oscillation with time with a frequency about 10{sup 6} Hz as the powered electrode is in a vapor bubble. By increasing water conductivity, a discharge current waveform transition from pulse to oscillation presents in the water covering case. These suggest that the gas-water interface has a significant influence on the discharge property.

Authors:
; ; ; ; ; ;  [1]
  1. Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)
Publication Date:
OSTI Identifier:
22072505
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 19; Journal Issue: 6; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BREAKDOWN; BUBBLES; ELECTRIC CURRENTS; ELECTRIC DISCHARGES; ELECTRIC POTENTIAL; ELECTRODES; INTERFACES; KHZ RANGE; METALS; OSCILLATIONS; PLASMA; PULSES; TUBES; VAPORS; WATER; WAVE FORMS; WIRES

Citation Formats

Zheng, S. J., Zhang, Y. C., Ke, B., Ding, F., Tang, Z. L., Yang, K., and Zhu, X. D. Dynamic characteristics of gas-water interfacial plasma under water. United States: N. p., 2012. Web. doi:10.1063/1.4731699.
Zheng, S. J., Zhang, Y. C., Ke, B., Ding, F., Tang, Z. L., Yang, K., & Zhu, X. D. Dynamic characteristics of gas-water interfacial plasma under water. United States. doi:10.1063/1.4731699.
Zheng, S. J., Zhang, Y. C., Ke, B., Ding, F., Tang, Z. L., Yang, K., and Zhu, X. D. Fri . "Dynamic characteristics of gas-water interfacial plasma under water". United States. doi:10.1063/1.4731699.
@article{osti_22072505,
title = {Dynamic characteristics of gas-water interfacial plasma under water},
author = {Zheng, S. J. and Zhang, Y. C. and Ke, B. and Ding, F. and Tang, Z. L. and Yang, K. and Zhu, X. D.},
abstractNote = {Gas-water interfacial plasmas under water were generated in a compact space in a tube with a sandglass-like structure, where two metal wires were employed as electrodes with an applied 35 kHz ac power source. The dynamic behaviors of voltage/current were investigated for the powered electrode with/without water cover to understand the effect of the gas-water interface. It is found that the discharge exhibits periodic pulsed currents after breakdown as the powered electrode is covered with water, whereas the electrical current reveals a damped oscillation with time with a frequency about 10{sup 6} Hz as the powered electrode is in a vapor bubble. By increasing water conductivity, a discharge current waveform transition from pulse to oscillation presents in the water covering case. These suggest that the gas-water interface has a significant influence on the discharge property.},
doi = {10.1063/1.4731699},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 6,
volume = 19,
place = {United States},
year = {2012},
month = {6}
}