Pfc/ja-80-24 Free Electron Laser Instability for a Relativ- Istic Annular Electron Beam in a Helical Wig- Gler Field

Pfc-ja-81-8 Free Electron Laser Instability for a Relativ- Istic Solid Electron Beam in a Helical Wiggler Field

Self-Fields Effects on Gain in a Helical Wiggler Free Electron Laser with Ion-Channel Guiding and Axial Magnetic Field

In this paper, we have investigated the effects of self-fields on gain in a helical wiggler free electron laser with axial magnetic field and ion-channel guiding. The self-electric and self-magnetic fields of a relativistic electron beam passing through a helical wiggler are analyzed. The electron trajectories and the small signal gain are derived. Numerical investigation is shown that for grou...

Pfc/ja-86-54 Influence of Untrapped Electrons on the Sideband Instability in a Helical Wiggler Free Electron Laser

PFC / JA - 82 - 33 Cross - field Free Electron Laser Instability for a Tenuous Electron Beam

The free electron laser instability is investigated for a tenuous circulating electron beam propagating perpendicular to a uniform magnetic field B 0 , and transverse wiggler field modeled by B. sin ky, in planar geometry. Unlike the rippled-field magnetron which operates at Brillouin flow, the present analysis assumes a low-density electron beam with w. 4D '. Making use of a macroscopic cold-f...

Pfc/ja-89-32 Self-field-induced Chaoticity in the Electron Orbits in a Helical-wiggler Free Electron Laser with Axial Guide Field