Observation of the field emission from the melting zone occurring just before explosive electron emission

Author

Batrakov, A.V. ; Proskurovsky, D.I. ; Popov, S.A.

Author_Institution

Inst. of High-Current Electron., Tomsk, Russia

Volume

6

Issue

4

fYear

1999

fDate

8/1/1999 12:00:00 AM

Firstpage

410

Lastpage

417

Abstract

Emission patterns corresponding to the transition of intense field emission to explosive electron emission, not observed earlier, have been obtained with the use of a Muller projector and HV pulses of duration 2 to 5 ns. The brightness of these patterns is much higher than that of conventional field emission patterns. Moreover, the images obtained have a specific structure of varied brightness, such that regions of different brightness are “framed” in rings. Analysis of experimental data suggests that these patterns are field-emission in nature. The appearance of emission patterns of this type is accounted for by the electron emission from the liquid phase, occurring immediately prior to the explosion of a microemitter

Keywords

electron field emission; HV pulse; Muller projector; brightness; explosive electron emission; field emission; liquid metal; melting zone; microemitter; Brightness; Cathodes; Electromagnetic interference; Electron emission; Explosions; Explosives; Iron; Switches; Vacuum arcs; Voltage;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.788735

Filename

788735