Effects of injection of free electron lasers on axial velocity spread of beams
Abstract
An electron beam can be injected into the interaction zone of a free-electron laser adiabatically or nonadiabatically. Nonadiabatic injection is preferred. For free-electron lasers with axial magnetic fields, initial perpendicular velocities can induce axial velocity fluctuations. In order to reduce the fluctuation amplitude, a step-like axial magnetic field can be applied for cooling the perpendicular temperature of the beam, for which proper selection of system parameters is necessary.
- Publication:
-
China Rept Sci Technol JPRS CST
- Pub Date:
- April 1987
- Bibcode:
- 1987ChRST.......55W
- Keywords:
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- Beam Injection;
- Electron Beams;
- Free Electron Lasers;
- Velocity;
- Adiabatic Conditions;
- Electron Density (Concentration);
- Magnetic Fields;
- Oscillators;
- Lasers and Masers