CATHODES FOR ELECTRON GUNS

Authors
KUZNETSOV GI
Citation
Gi. Kuznetsov, CATHODES FOR ELECTRON GUNS, Physica scripta. T, T71, 1997, pp. 39-45
Citations number
51
Categorie Soggetti
Physics
Journal title
Physica scripta. T → ACNP
ISSN journal
02811847
Volume
T71
Year of publication
1997
Pages
39 - 45
Database
ISI
SICI code
0281-1847(1997)T71:<39:CFEG>2.0.ZU;2-D
Abstract
This paper reviews cathodes for high current density electron beams. I t describes the following types of emitters: oxide, dispenser, LaB6, I rCe. Photo and ferroelectric cathodes are presented briefly. Current d ensity from the cathodes, their lifetimes, some features due to the ca thode surface properties and influence on the beam of filament magneti c field are discussed.