Release Time:2019-03-11  Hits:

Indexed by: Journal Article

Date of Publication: 2011-01-01

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

Included Journals: CPCI-S、EI、SCIE

Volume: 39

Issue: 1,SI

Page Number: 360-363

ISSN: 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.