Nonlinear interaction of a cold beam of finite density with a plasma
Abstract
It was previously shown that a cold beam of low density interacting with a plasma undergoes a nonlinear instability which results in the growth of a practically monochromatic wave which stops growing when the beam is trapped. One of the nonlinear effects consists of beam bunching which leads to the formation of an electric field manifested in the harmonics of the fundamental wave. This paper uses the particle in cell technique to investigate the nonlinear instability produced in an electron beam of finite density (the beam to plasma density ratio is 0.0210%) by interaction with a plasma. It is found that for the case of finitedensity beams, the field formed as a result of trapped electron bunching has a significant effect on beam motion, unlike the case of lowdensity beams.
 Publication:

Zhurnal Tekhnicheskoi Fiziki
 Pub Date:
 August 1976
 Bibcode:
 1976ZhTFi..46.1644A
 Keywords:

 Cold Plasmas;
 Electron Beams;
 Electron Density (Concentration);
 Particle In Cell Technique;
 PlasmaParticle Interactions;
 Trapped Particles;
 Electric Fields;
 Electron Bunching;
 Electron Energy;
 Magnetohydrodynamic Stability;
 Mathematical Models;
 Monochromatic Radiation;
 Nonlinearity;
 Plasma Density;
 Plasma Physics