Spatial-temporal hysteresis effects in an intense electron beam

Author

Agafonov, A.V. ; Lebedev, A.N. ; Voronin, V.S.

Author_Institution

P.N. Lebedev Phys. Inst., Acad. of Sci., Moscow, Russia

Volume

5

fYear

1995

fDate

1-5 May 1995

Firstpage

3269

Abstract

An electron gun with large compression of a thin annular beam for generation of high-power microwaves and IR radiation has been designed. Computer simulations of beam formation in the gun show some hysteresis effects: a beam with different current can exist in the same external conditions. At the upper (metastable) part of a hysteresis curve the beam current exceeds Child-Langmuir current. Experimental observation of these metastable states is possible if one has the possibility for fast control of emitted current, which is the case for photoemission cathode. The results of computer simulation are presented and physics reasons of such behaviour are discussed

Keywords

electron guns; hysteresis; Child-Langmuir current; IR radiation; beam current; beam formation; computer simulations; electron gun; emitted current; high-power microwaves; hysteresis curve; hysteresis effects; intense electron beam; large compression; metastability; photoemission cathode; spatial-temporal hysteresis effects; thin annular beam; Acceleration; Cathodes; Coaxial components; Diodes; Electrons; Hysteresis; Merging; Particle beam injection; Solids; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1995., Proceedings of the 1995

Conference_Location

Dallas, TX

Print_ISBN

0-7803-2934-1

Type

conf

DOI

10.1109/PAC.1995.505851

Filename

505851