Induced Cerenkov emission of a 'hot' electron beam in an external magnetic field
Abstract
The problem of the radiation of a beam of ultrarelativistic electrons moving in a refracting medium (or some other decelerating system) in the field of a plane electromagnetic wave in the presence of a constant homogeneous applied magnetic field is analyzed in the one-particle approximation. It is shown that, when the requirements for the beam are relatively slack, a situation may arise where the processes of induced photon absorption are suppressed below the level of induced radiation. This results in the coherent pumping of an electromagnetic wave by a 'hot' electron beam. Analytical expressions are obtained for the gain factor for different ratios between the applied magnetic field and the amplitude intensity of the wave field.
- Publication:
-
Zhurnal Tekhnicheskoi Fiziki
- Pub Date:
- May 1992
- Bibcode:
- 1992ZhTFi..62..146B
- Keywords:
-
- Cerenkov Radiation;
- Electron Emission;
- Magnetic Field Configurations;
- Particle Interactions;
- Relativistic Electron Beams;
- Coherent Radiation;
- Electromagnetic Radiation;
- Multiphoton Absorption;
- Plane Waves;
- Lasers and Masers