Physics of electron emission from metal-dielectric cathodes

Author

Mesyats, Gennady A.

Author_Institution

Inst. of Elektrophys., Acad. of Sci., Ekaterinburg, Russia

Volume

2

Issue

2

fYear

1995

fDate

4/1/1995 12:00:00 AM

Firstpage

272

Lastpage

276

Abstract

The present paper gives a description of the metal-dielectric cathode interaction. There is an explosive electron emission on the cathodes, that occurs through explosions of the metal microprotrusions at so-called triple points (metal-dielectric vacuum). The current of a vacuum discharge over the dielectric surface plays an initiating role. Such a mechanism of emission operates in low-voltage ferroelectric cathodes, in cathodes of long service in high-power pulse repetitive accelerators, as well as in the cathodes used in focusing high power electron beams

Keywords

cathodes; critical points; electron emission; ferroelectric devices; dielectric surface; electron emission physics; explosive electron emission; high power electron beam focusing; high-power pulse repetitive accelerators; long service cathodes; low-voltage ferroelectric cathodes; metal microprotrusions; metal-dielectric cathodes; vacuum discharge; Cathodes; Dielectrics; Electron accelerators; Electron beams; Electron emission; Explosions; Explosives; Ferroelectric materials; Physics; Surface discharges;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.388251

Filename

388251