Release Time:2019-03-09  Hits:

Indexed by: Journal Papers

Date of Publication: 2015-06-29

Journal: APPLIED PHYSICS LETTERS

Included Journals: Scopus、EI、SCIE

Volume: 106

Issue: 26

ISSN: 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.