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论文类型：期刊论文

发表时间：2016-08-01

发表刊物：PLASMA SCIENCE & TECHNOLOGY

收录刊物：Scopus、SCIE、EI

卷号：18

期号：8

页面范围：821-825

ISSN号：1009-0630

关键字：underwater spark discharge; electron density; optical emission spectrum

摘要：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.