Generation of microwave free-electron laser radiation using sheet electron beam and planar electromagnetic wiggler

Author

Kumar, A. V Ravi ; Mohandas, K.K. ; Jain, K.K.

Author_Institution

Inst. for Plasma Res., Gandhinagar, India

Volume

26

Issue

3

fYear

1998

fDate

6/1/1998 12:00:00 AM

Firstpage

556

Lastpage

560

Abstract

An experimental study of sheet electron beam propagation through a planar electromagnetic wiggler and generation of microwave radiation by free-electron laser action has been carried out. The space charge dominated sheet electron beam of energy ~100-200 keV, current 50-150 A, and pulsewidth of 100-150 ns was propagated through a 20-period planar electromagnetic wiggler. Significant enhancement in the beam transmission through the wiggler was observed as the wiggler magnetic field was increased, even though the operating regime of the beam is space charge dominated. Generation of microwave radiation in E-band (60-90 GHz) was also observed when the sheet electron beam is injected through the niggler in the presence of wiggler magnetic field

Keywords

free electron lasers; microwave generation; millimetre wave generation; space charge; wigglers; 100 to 200 keV; 50 to 150 A; 60 to 90 GHz; E-band; beam transmission; microwave free-electron laser radiation generation; planar electromagnetic wiggler; sheet electron beam; space charge; wiggler magnetic field; Electromagnetic propagation; Electromagnetic radiation; Electron beams; Free electron lasers; Masers; Microwave generation; Microwave propagation; Optical propagation; Space charge; Undulators;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.700791

Filename

700791