Initiation of explosive electron emission in microwave fields

Author

Barengolts, Sergey Aleksandrovich ; Kreindel, Mikhail Yulievich ; Litvinov, Evgeniy Aleksandrovich

Author_Institution

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

Volume

26

Issue

3

fYear

1998

fDate

6/1/1998 12:00:00 AM

Firstpage

252

Lastpage

255

Abstract

The microwave breakdown has been studied for the case in which it is caused by the heating and subsequent thermal destruction of the micropoints present on the cathode surface subjected to the action of a rapidly varying electric field. The heating of a micropoint by the emission current induced by a microwave field has been numerically simulated using the two-temperature model. The delay time to breakdown has been calculated as a function of the frequency of the electric field oscillation for different micropoint geometries

Keywords

electric breakdown; electron field emission; heating; thermionic cathodes; cathode surface; delay time; electric field oscillation; emission current; explosive electron emission; heating; micropoint geometries; micropoints; microwave breakdown; microwave field; microwave fields; rapidly varying electric field; thermal destruction; two-temperature model; Cathodes; Delay effects; Electric breakdown; Electromagnetic heating; Electron emission; Explosives; Frequency; Geometry; Numerical simulation; Resistance heating;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.700751

Filename

700751