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Taghi Mohsenpour

Taghi Mohsenpour

Academic rank: Associate Professor
ORCID:
Education: PhD.
ScopusId:
Faculty: Science
Address: Department of Physics, Faculty of Basic Sciences,University of Mazandaran , Babolsar, Iran
Phone: 01135302480

Research

Title
Wave mode instabilities in a two-stream free-electron laser with a background plasma
Type
JournalPaper
Keywords
Wave mode; instabilities; two-stream; free-electron laser; background plasma
Year
2013
Journal Plasma Physics and Controlled Fusion
DOI
Researchers Shabnam Nadrifard ، behrouz Maraghechi ، Taghi Mohsenpour

Abstract

A theory is presented for a two-stream free-electron laser (FEL) with a background plasma. A dispersion relation (DR) for the unstable couplings of wave modes is derived using fluid formulation. This DR is solved numerically to find the unstable modes and their growth rate. The effect of the velocity difference of the two electron beams as well as the background plasma on the FEL resonance and the two-stream instability is studied. It is shown that their separate as well as combined effects can increase the growth rates.