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Measurement of Temporally and Spatially Resolved Electron Density in the Filament of a Pulsed Spark Discharge in Water

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Indexed by:期刊论文

Date of Publication:2016-08-01

Journal:PLASMA SCIENCE & TECHNOLOGY

Included Journals:Scopus、SCIE、EI

Volume:18

Issue:8

Page Number:821-825

ISSN No.:1009-0630

Key Words:underwater spark discharge; electron density; optical emission spectrum

Abstract:The temporally and spatially resolved optical emission spectrum of Ha of a pulsed spark discharge in water was experimentally measured. The temporally and spatially resolved electron densities, along the radial direction of the spark filament, for a pulsed spark discharge in water with a conductivity of 100 S/cm were investigated. The electron density in the spark filament was found to be in the 1018/cm(3) order of magnitude. The highest electron density was measured at the primary stage of the spark filament, and it decreased with time. The radial distribution of electron density increased from the center to the edge of the spark filament.

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