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

Pfc/ja-80-24 Free Electron Laser Instability for a Relativ- Istic Annular Electron Beam in a Helical Wig- Gler 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-89-32 Self-field-induced Chaoticity in the Electron Orbits in a Helical-wiggler Free Electron Laser with Axial Guide Field

Pfc/ja-90-9 Influence of Trapped-electron Distribution on the Sideband Instability in a Helical Wiggler Free Electron Laser

Use is made of the Vlasov-Maxwell equations to investigate detailed properties of the sideband instability for a helical wiggler free-electron laser with wiggler wavelength A, = 27r/ko =const and normalized wiggler amplitude a, = eB./mc 2ko =const. The model describes the nonlinear evolution of a right-circularly polarized primary electromagnetic wave with frequency w,, wavenumber k,, and slowl...