Title :
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
fDate :
6/1/1998 12:00:00 AM
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;
Journal_Title :
Plasma Science, IEEE Transactions on
