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Indexed by:期刊论文

Date of Publication:2011-01-01

Journal:15th International Symposium on Electromagnetic Launch (EML) Technology

Included Journals:SCIE、EI、CPCI-S

Volume:39

Issue:1,SI

Page Number:360-363

ISSN No.:0093-3813

Key Words:Electron emission; heat conduction; initial plasmas; triggered vacuum switch (TVS)

Abstract:A triggered vacuum switch (TVS) is an important component in pulsed power systems due to its quick switch, rapid dielectric recovery, small volume, convenient trigger system, simple structure, etc. A sample of field-breakdown TVS is fabricated, and its turning-on process is described in this paper. The initial plasmas play an important role in the process of TVS operation; its development includes two parts: 1) generation and 2) expansion. Based on the field breakdown principle, an electron emission model is chosen to describe the generation of initial plasmas. A heat conduction model is set up to deduce the expansion of initial plasmas. The model calculated result is accordant with the delay experiment.