Steady-state electron trajectories in a free electron laser with ion-channel and axial magnetic field in the presence of self-fields
الموضوعات : Journal of Theoretical and Applied Physics
T. Mohsenpour
1
(Department of Physics, Faculty of Basic Sciences, University of Mazandaran)
الکلمات المفتاحية: Free, electron laser, Self, fields, Ion, channel, Axial magnetic field, Steady, state orbits,
ملخص المقالة :
AbstractA theory of self-fields in a one-dimensional helical wiggler free electron laser with ion-channel guiding and axial magnetic field is presented. The steady-state orbits under the influence of self-field are derived and discussed. The Φ function that determines the rate of change of axial velocity with energy is derived. The numerical results show the effects of self-fields and the two electron-beams guiding devices (ion-channel and axial magnetic field) on the trajectories when used separately and simultaneously. The study shows that new unstable orbits, in the first part of the group I and II orbits, are found. A detailed stability analysis of orbits is presented.
