Authors
Ahmad Omar and Sinan Bilikmen
Pages From
944
Pages To
957
Journal Name
Doĝa – Tr. J. Physics
Volume
17
Issue
17
Abstract
An electromagnetic wiggler field is used as a pump in this work. A guide magnetic
field is added to this configuration, since it is necessary in order to confine the
beam against the effects of self field. A small amplitude backward electromagnetic
wave is introduced as an additional perturbed electromagnetic wave, and first order
perturbation analysis is applied. A small signal gain formula is derived for this
system. Numerical calculations shows that this backward radiation field contributes
for gain enhancement of the system when it approaches orbital instability. This
enhancement of the gain is found within a new range of both the wiggler field
amplitude and the perturbed frequency.