Plasma waves propagating along a magnetic field in a strongly anisotropic relativistic plasma

Astrophysics ◽  
1979 ◽  
Vol 15 (2) ◽  
pp. 169-178 ◽  
Author(s):  
O. G. Onishchenko
Keyword(s):  
Magnetic Field ◽  
Plasma Waves ◽  
Relativistic Plasma

Modified Moore–Gibson–Thompson photo-thermoelastic model for a rotating semiconductor half-space subjected to a magnetic field

2021 ◽  
pp. 2150163
Author(s):  
A. E. Abouelregal ◽  
Hijaz Ahmad ◽  
S. K. Elagan ◽  
Nawal A. Alshehri
Keyword(s):  
Magnetic Field ◽  
Half Space ◽  
Plasma Waves ◽  
Angular Speed ◽  
Semiconducting Materials ◽  
Thermoelastic Model ◽  
Mode Method ◽  
Heat Transport Equation ◽  
Effects Of Rotation ◽  
Improved Model

This paper focuses on studying thermal, elastic and coupled plasma waves, in the sense of a photo-thermal process transport within an infinite semiconductor medium. In order to study photo-thermal interactions in two-dimensional semiconducting materials, a new mathematical model based on the Moore–Gibson–Thompson equation (MGTE) is implemented. The MGTE model involving the Green–Naghdi model of type III as well as the heat transport equation proposed by Lord and Shulman. We consider the semi-conductor half-space is rotated at a uniform angular speed and magnetized. The analysis of the distribution of thermophysical fields has been extracted by a normal mode method, represented graphically and discussed. The results predicted by the new and improved model have been compared with the generalized and classic ones. In addition, all field quantities have been examined for effects of rotation, a lifetime of the photo-generated, and the applied magnetic field.

scholarly journals Corrigendum

1979 ◽  
Vol 22 (3) ◽  
pp. 571-572
Author(s):  
E. Infeld ◽  
G. Rowlands
Keyword(s):  
Large Amplitude ◽  
Plasma Waves ◽  
Relativistic Plasma ◽  
Small Perturbations ◽  
Transverse Waves ◽  
The Stability

In this note we investigate the stability of large-amplitude longitudinal relativistic plasma waves. We find that they are secularly stable, that is, small perturbations grow in time proportional to time but not exponentially with time. Similar results have recently been obtained for transverse waves by Romeiras (1978)

Helicity waves propagating in a plasma

1991 ◽  
Vol 45 (3) ◽  
pp. 481-488 ◽  
Author(s):  
Z. Yoshida
Keyword(s):  
Magnetic Field ◽  
Faraday Effect ◽  
Low Frequency ◽  
Plasma Waves ◽  
Frequency Limit ◽  
High Frequencies ◽  
Transverse Modes ◽  
Longitudinal Part ◽  
The Waves ◽  
Perturbed Magnetic Field

There exist plasma waves that transport helicity although they do not propagate electromagnetic energy. The dispersion relations of such helicity waves are studied. The electric field of the waves is parallel to the perturbed magnetic field, and both are perpendicular to the perturbed current. In cross-field propagation, a helicity wave is decomposed into two transverse modes with different polarizations and a longitudinal part. The helicity waves are principally Alfvénic in the low-frequency limit. At high frequencies, the Faraday effect comes into the polarization.

scholarly journals High-current electron beam nonlinear relaxation in plasma and electron acceleration

1988 ◽  
Vol 6 (3) ◽  
pp. 607-612
Author(s):  
D. M. Karfidov ◽  
N. A. Nikolov ◽  
P. N. Malinov ◽  
I. P. Trifonov
Keyword(s):  
Magnetic Field ◽  
Electron Beam ◽  
Beam Energy ◽  
Modulation Instability ◽  
Plasma Waves ◽  
High Current ◽  
High Current Electron Beam ◽  
Nonlinear Relaxation ◽  
Current Electron ◽  
High Current Electron

A nonlinear relaxation is observed when an electron beam interacts with plasma in an external magnetic field. An acceleration of electrons to energies which are more than twice that of the initial beam energy is observed. The acceleration mechanism is connected with the modulation instability of the plasma waves which is excited when the beam relaxes.

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