Nonlinear saturation of the relativistic beam-plasma instability in the presence of ion density fluctuations

1973 ◽  
Vol 16 (9) ◽  
pp. 1546 ◽  
Author(s):  
A. J. Toepfer
Keyword(s):  
Plasma Instability ◽  
Density Fluctuations ◽  
Nonlinear Saturation ◽  
Ion Density ◽  
Relativistic Beam ◽  
Beam Plasma ◽  
Beam Plasma Instability

Nonlinear saturation of hot beam-plasma instability

Pramana ◽  
1976 ◽  
Vol 6 (6) ◽  
pp. 329-342 ◽  
Author(s):  
A S Sharma ◽  
B Buti
Keyword(s):  
Plasma Instability ◽  
Nonlinear Saturation ◽  
Beam Plasma ◽  
Beam Plasma Instability

scholarly journals Electron beam relaxation in inhomogeneous plasmas

2013 ◽  
Vol 31 (8) ◽  
pp. 1379-1385 ◽  
Author(s):  
A. Voshchepynets ◽  
V. Krasnoselskikh
Keyword(s):  
Electron Beam ◽  
Beam Energy ◽  
Electron Beams ◽  
Inhomogeneous Plasma ◽  
Density Fluctuations ◽  
Langmuir Waves ◽  
Wave Trapping ◽  
Beam Plasma ◽  
Beam Plasma Instability ◽  
Accelerated Particles

Abstract. In this work, we studied the effects of background plasma density fluctuations on the relaxation of electron beams. For the study, we assumed that the level of fluctuations was so high that the majority of Langmuir waves generated as a result of beam-plasma instability were trapped inside density depletions. The system can be considered as a good model for describing beam-plasma interactions in the solar wind. Here we show that due to the effect of wave trapping, beam relaxation slows significantly. As a result, the length of relaxation for the electron beam in such an inhomogeneous plasma is much longer than in a homogeneous plasma. Additionally, for sufficiently narrow beams, the process of relaxation is accompanied by transformation of significant part of the beam kinetic energy to energy of accelerated particles. They form the tail of the distribution and can carry up to 50% of the initial beam energy flux.

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