scholarly journals Comment on ‘‘Dispersion relation for a relativistic electron beam in a plasma’’ [Phys. Fluids 26, 2271(1983)]

1984 ◽  
Vol 27 (8) ◽  
pp. 2194 ◽  
Author(s):  
Magdi Shoucri
Keyword(s):  
Electron Beam ◽  
Dispersion Relation ◽  
Relativistic Electron ◽  
Relativistic Electron Beam ◽  
Plasma Phys

Cyclotron radiation from a relativistic electron beam in a static magnetic field

1984 ◽  
Vol 32 (1) ◽  
pp. 55-80 ◽  
Author(s):  
Z. G. An ◽  
Y. C. Lee ◽  
T. T. Lee ◽  
H. H. Chen
Keyword(s):  
Magnetic Field ◽  
Electron Beam ◽  
Dispersion Relation ◽  
Relativistic Electron ◽  
Relativistic Electron Beam ◽  
Particle System ◽  
Critical Energy ◽  
Linear Dispersion ◽  
Linear Dispersion Relation ◽  
Ring Model

Electromagnetic cyclotron instabilities of a relativistic electron beam propagating in an external magnetic field are studied by considering electron motion inside a self-consistent electromagnetic field. When the number of electrons in a subgroup is greater than two, or when the phases are random, the linear dispersion relation obtained agrees with that of Chu et al. for a gyrotron in a ring model. When the number of electrons in a subgroup is limited to two only, the linear dispersion relation is different in that it has an instability threshold. Completely nonlinear motion is also studied using the method of Poincaré's return map, or by considering the departure rate of nearby trajectories. Stochasticity is observed in the nonlinear oscillation of the wave-particle system when a critical energy is exceeded. Physical implications for gyrotron operation are also discussed.

Effect of collisions on the relativistic electromagnetic instability

1980 ◽  
Vol 24 (3) ◽  
pp. 483-488 ◽  
Author(s):  
Toshio Okada ◽  
Keishiro Niu
Keyword(s):  
Growth Rate ◽  
Electron Beam ◽  
Dispersion Relation ◽  
Relativistic Electron ◽  
Relativistic Electron Beam ◽  
Plasma Temperature ◽  
Electromagnetic Instability

The electromagnetic instability of a relativistic electron beam penetrating an infinite plasma is analyzed. The purpose of this paper is to determine the effect of collisions within the plasma upon the growth rate of the Weibel-type electromagnetic instability. The dispersion relation including the effect of collisions is solved analytically and numerically. It is found that collisions can enhance the growth rate of the electromagnetic instability in the case of low plasma temperature.

Incubation Rate of Zooplankton Egg after Irradiation of Pulsed Intense Relativistic Electron Beam

2015 ◽  
Vol 135 (6) ◽  
pp. 355-356 ◽  
Author(s):  
Takahiro Kazetoh ◽  
Kazumasa Takahashi ◽  
Toru Sasaki ◽  
Takashi Kikuchi ◽  
Nob. Harada ◽  
...  
Keyword(s):  
Electron Beam ◽  
Relativistic Electron ◽  
Relativistic Electron Beam

Pulse Shaping a High-Current Relativistic Electron Beam in Vacuum

1990 ◽  
Author(s):  
J. D. Miller ◽  
R. F. Schneider ◽  
H. S. Uhm ◽  
K. T. Nguyen ◽  
K. W. Struve
Keyword(s):  
Electron Beam ◽  
Relativistic Electron ◽  
Relativistic Electron Beam ◽  
Pulse Shaping ◽  
High Current
Sign in / Sign up

Export Citation Format

Share Document