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anbir S, jafari S, jafarnia F. self-electric and self-magnetice fields effects on the relativistic electron beam propagating through a plasma wiggler in a free-electron laser. ICOP & ICPET _ INPC _ ICOFS 2015; 21 :281-284
URL: http://opsi.ir/article-1-482-en.html
URL: http://opsi.ir/article-1-482-en.html
1- guilan university
Abstract: (4016 Views)
In this paper we study the electron beam trajectories propagating through a plasma wiggler in a Free Electron Laser (FEL). Plasma whistler mode can be raised in the plasma medium by applying an axial magnetic field then this mode can be employed as a plasma wave wiggler. The short wavelength of the plasma wiggler results in coherent radiations with very short wavelength by use of low energy beams (in the range of some MeV) and without using electron beams at the range of GeV. Besides, we survey self-effects of the magnetic and electric fields of electron beam on the electron trajectories, and we computed the dispersion relation of the system. Results show that plasma density adjustment can able to control the resonant points of the interaction between electron beam energy and electromagnetic wave, so it can be used in effective gain of the laser. Finally, paramagnetic and diamagnetic effects resulted from the wiggler strike on electron beam are analyzed.
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