A theoretical investigation of two-stream instability in two hollow relativistic electron beam

Author

Uhm, H.S.

Author_Institution

US Naval Surface Warfare Center, Silver Spring, MD, USA

fYear

1993

fDate

7-9 June 1993

Firstpage

175

Abstract

Summary form only given. The two-stream klystron has been proposed to enhance the current modulation, thereby improving the performance of relativistic klystron amplifiers. In the two-stream klystron amplifier, two hollow electron beams propagate in the downstream region. A charge bunching of one beam compensates for that of the other beam, considerably reducing the influence of the self-electric field arising from this bunching. In addition, the self-growing mechanism of the charge bunching due to the two-stream instability of the two beams enhances further current modulation. The two-stream klystron is subjected to various physical phenomena, including the influence of the axial momentum spread on the longitudinal two-stream instability and effects of the transverse two-stream instability on beam propagation.

Keywords

klystrons; axial momentum spread; beam propagation; charge bunching; current modulation; downstream region; hollow relativistic electron beam; relativistic klystron amplifiers; self-electric field; self-growing mechanism; two-stream instability; two-stream klystron; Amplitude modulation; Cathodes; Cyclotrons; Electron beams; Frequency; High power amplifiers; Klystrons; Optical modulation; Solenoids; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Plasma Science, 1993. IEEE Conference Record - Abstracts., 1993 IEEE International Conference on

Conference_Location

Vancouver, BC, Canada

ISSN

0730-9244

Print_ISBN

0-7803-1360-7

Type

conf

DOI

10.1109/PLASMA.1993.593488

Filename

593488