Electron orbits in combined electromagnetic wiggler and axial guide magnetic fields
Abstract
The interaction between a relativistic electron beam and an electromagnetic wiggler in the second stage of a freeelectron laser is analyzed with emphasis on the effect of an axial guide magnetic field on such interaction. In particular, the singleparticle trajectories in this configuration are treated; singleparticle orbits are derived, and the stability of the orbits is discussed. Two classes of orbits corresponding to two regions of electron cyclotron frequencies are found, and both classes are shown to be stable in the case of an electromagnetic wiggler.
 Publication:

IEEE Journal of Quantum Electronics
 Pub Date:
 July 1985
 DOI:
 10.1109/JQE.1985.1072749
 Bibcode:
 1985IJQE...21.1080F
 Keywords:

 Cyclotron Frequency;
 Electromagnetic Radiation;
 Electron Orbitals;
 Magnetic Field Configurations;
 Relativistic Electron Beams;
 Wiggler Magnets;
 Differential Equations;
 Equations Of Motion;
 Magnetostatics;
 Lasers and Masers