Investigations of the multi-pulsed emission characteristics of velvet

Some efforts were made to measure the electron emission characteristics of velvet under multi-pulse mode. The voltages across the diode were 1 MV for two-pulse mode and 500 kV for four-pulse mode. Pulse duration was 100 ns and pulse to pulse separation was 400 ns. The research indicates that under m...

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Bibliographic Details
Published in:Applied surface science 2005-09, Vol.251 (1), p.262-266
Main Authors: Xia, Liansheng, Zhang, Kaizhi, Shi, Jinshui, Zhang, Linwen
Format: Article
Language:English
Subjects:
Cathode plasma
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Field emission
Multi-pulsed diode
Physics
Velvet
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Summary:Some efforts were made to measure the electron emission characteristics of velvet under multi-pulse mode. The voltages across the diode were 1 MV for two-pulse mode and 500 kV for four-pulse mode. Pulse duration was 100 ns and pulse to pulse separation was 400 ns. The research indicates that under multi-pulse mode the emission of velvet is not uniform and that beam degradation is caused by cathode plasma motion. The factors that determine the plasma motion are analyzed and the experimental results of plasma velocity and its distribution are presented.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2005.03.153