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Indexed by:Journal Papers

Date of Publication:2015-06-29

Journal:APPLIED PHYSICS LETTERS

Included Journals:SCIE、EI、Scopus

Volume:106

Issue:26

ISSN No.:0003-6951

Abstract:By combining a high-speed frame camera with a monochromator, the spatially resolved optical emission spectrum of hydrogen alpha line in a single filament of a pulsed positive streamer discharge in water has been experimentally measured. The spatially resolved electron densities in a single filament of a pulsed positive streamer discharge in water with a conductivity of 200 mu S/cm were investigated. During the experiment, the average energy per pulse of discharge was 90.6 +/- 13.6 mJ. The results show that the electron density in the streamer filament is 10(17-18)/cm(3), and present a decreasing tendency along the axial direction of the streamer filament with increasing distance from the tip of the anode. (C) 2015 AIP Publishing LLC.