Electromagnetic wave excitation by a modulated electron beam injected in an anisotropic plasma channel

2002 ◽  
Author(s):  
A.V. Kudrin ◽  
M.Yu. Lyakh ◽  
T.M. Zaboronkova ◽  
C. Krafft
Keyword(s):  
Electron Beam ◽  
Electromagnetic Wave ◽  
Plasma Channel ◽  
Anisotropic Plasma ◽  
Wave Excitation

Electromagnetic-wave-pumped free-electron laser in a plasma channel

1997 ◽  
Vol 58 (4) ◽  
pp. 613-621 ◽  
Author(s):  
JETENDRA PARASHAR ◽  
H. D. PANDEY ◽  
A. K. SHARMA ◽  
V. K. TRIPATHI
Keyword(s):  
Electron Beam ◽  
Electromagnetic Wave ◽  
Laser Radiation ◽  
Laser Pulse ◽  
Free Electron Laser ◽  
Relativistic Electron Beam ◽  
Plasma Channel ◽  
Beam Quality ◽  
Coherent Radiation ◽  
Millimetre Wave

An intense short laser pulse or a millimetre wave propagating through a plasma channel may act as a wiggler for the generation of shorter wavelengths. When a relativistic electron beam is launched into the channel from the opposite direction, the laser radiation is Compton/Raman backscattered to produce coherent radiation at shorter wavelengths. The scheme, however, requires a superior beam quality with energy spread less than 1% in the Raman regime.

scholarly journals Charged particle acceleration by electron Bernstein wave in a plasma channel

2010 ◽  
Vol 28 (3) ◽  
pp. 409-414 ◽  
Author(s):  
Asheel Kumar ◽  
Binod K. Pandey ◽  
V.K. Tripathi
Keyword(s):  
Magnetic Field ◽  
Particle Acceleration ◽  
Electron Beam ◽  
Electromagnetic Wave ◽  
Plasma Channel ◽  
Mode Conversion ◽  
Transverse Field ◽  
Gaussian Profile ◽  
Relativistic Mass ◽  
Bernstein Wave

AbstractA model of electron acceleration by an electron Bernstein mode in a parabolic density profile is developed. The mode has a Gaussian profile. It could be excited via the mode conversion of an electromagnetic wave or by an electron beam. As it attains a large amplitude, it axially traps electrons moving close to its parallel phase velocity, where parallel refers to the direction of static magnetic field. As the electrons are accelerated and tend to get out of phase with the wave, the transverse field of the mode enhances its energy and relativistic mass, increasing the dephasing length. The scheme can produce electron energies up to a few MeV.

Diffraction by a perfectly conducting wedge in an anisotropic plasma

1965 ◽  
Vol 61 (3) ◽  
pp. 767-776 ◽  
Author(s):  
T. R. Faulkner
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Wave ◽  
Difference Equation ◽  
Integral Representation ◽  
Surface Waves ◽  
Uniform Magnetic Field ◽  
Anisotropic Plasma ◽  
Contour Integral ◽  
Anisotropic Dielectric

SummaryThe problem considered is the diffraction of an electromagnetic wave by a perfectly conducting wedge embedded in a plasma on which a uniform magnetic field is impressed. The plasma is assumed to behave as an anisotropic dielectric and the problem is reduced, by employing a contour integral representation for the solution, to solving a difference equation. Surface waves are found to be excited on the wedge and expressions are given for their amplitudes.

scholarly journals Information’s Relativistic Convey with Matter Wave’s Non-Dispersive Propagation

2020 ◽  
pp. 1-4
Author(s):  
Wang Xinye
Keyword(s):  
Quantum Mechanics ◽  
Electron Beam ◽  
Electromagnetic Wave ◽  
Duality Theory ◽  
Relativity Theory ◽  
Matter Wave ◽  
Maximum Value ◽  
Wave Particle Duality ◽  
Dispersive Propagation ◽  
Special Relativity Theory

The Wave-Particle Duality is a basic property of microscopic particles. As a basic concept of quantum mechanics, the wave-particle duality theory from elementary particles to big molecules had been verified by lots of experiments. Different from electromagnetic wave, the matter wave’s propagation is not only fast but also adjustable. According to the special relativity theory, the group velocity with which the overall envelope shape of the wave, namely the related particle’s propagation and information convey speed is changeable with its energy and related wavelength, among which only the energy exceeds over the minimum value, the propagation can be starting and the velocity is not allowed to surpass the maximum value i.e. the light speed in vacuum. Take electron as an example, if the free electron beam gains energy higher than around 8.187×10ˉᴵ⁴J and the related wavelength is shorter than around 5.316×10ˉ³nm, the matter wave with information can start to propagate.  

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