On the formation of periodic and solitary whistler envelopes

1986 ◽  
Vol 36 (1) ◽  
pp. 25-35 ◽  
Author(s):  
G. Mann
Keyword(s):  
Nonlinear Interaction ◽  
Ponderomotive Force ◽  
Background Plasma ◽  
Conserved Quantities ◽  
Whistler Waves ◽  
Lagrange Formalism

The nonlinear interaction of whistler waves with the background plasma via the ponderomotive force gives rise to the formation of both periodic and solitary whistler envelopes. This is described in terms of the Lagrange formalism which allows us to define conserved quantities which determine, together with the parameters of the background plasma and the whistler frequency, the particular form of the envelope.

scholarly journals Effect of thermal pressure on upward plasma fluxes due to ponderomotive force of Alfvén waves

2011 ◽  
Vol 18 (2) ◽  
pp. 235-241 ◽  
Author(s):  
A. K. Nekrasov ◽  
F. Z. Feygin
Keyword(s):  
Magnetic Moment ◽  
Ponderomotive Force ◽  
Standing Waves ◽  
Low Frequency ◽  
Alfven Waves ◽  
Background Plasma ◽  
Alfvén Waves ◽  
Thermal Pressure ◽  
Plasma Displacement

Abstract. We consider the action of the ponderomotive force of low-frequency Alfvén waves on the distribution of the background plasma. It is assumed that the ponderomotive force for traveling waves arises as a result of the background inhomogeneity of medium under study. Expressions for the ponderomotive force obtained in this paper differ from previous analogous results. The induced magnetic moment of medium is taken into account. It is shown that the well-known Pitayevsky's formula for the magnetic moment is not complete. The role of the induced nonlinear thermal pressure in the evolution of the background plasma is considered. We give estimations for plasma displacement due to the long- and short-acting nonlinear wave perturbations. Some discussion of the ponderomotive action of standing waves is provided.

Nonlinear interaction of electrostatic ion-cyclotron and drift waves in plasmas

1996 ◽  
Vol 56 (1) ◽  
pp. 187-191 ◽  
Author(s):  
O. A. Pokhotelov ◽  
L. Stenflo ◽  
P. K. Shukla
Keyword(s):  
Nonlinear Interaction ◽  
Ponderomotive Force ◽  
Modulational Instability ◽  
Low Frequency ◽  
Drift Waves ◽  
Nonlinear Coupling ◽  
Constant Amplitude ◽  
Ion Cyclotron Waves ◽  
Ion Cyclotron ◽  
Model Equations

Model equations describing the nonlinear coupling between electrostatic ion-cyclotron and drift waves are derived, taking into account the action of the low-frequency ponderomotive force associated with the ion-cyclotron waves. It is found that this interaction is governed by a pair of equations, which can be used for studying the modulational instability of a constant amplitude ion-cyclotron wave as well as the dynamics of nonlinearly coupled ion-cyclotron and drift waves.

scholarly journals Controlling the type and intensity of low-frequency waves generated by laser plasma clots in a force tube of magnetized plasma

2021 ◽  
Vol 2067 (1) ◽  
pp. 012019
Author(s):  
A G Berezutsky ◽  
V N Tishchenko ◽  
A A Chibranov ◽  
I B Miroshnichenko ◽  
Yu P Zakharov ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Laser Plasma ◽  
Low Frequency ◽  
Alfven Waves ◽  
Magnetized Plasma ◽  
Background Plasma ◽  
Alfvén Waves ◽  
Whistler Waves ◽  
Low Frequency Waves

Abstract In this work, we study the influence of the parameters of a magnetized background plasma on the intensity of whistler waves generated by periodic laser plasma bunches in a magnetic field tube. It is shown that at 0.3 < Lpi > 0.4 Alfvén waves and whistlers are generated. In the region Lpi> 0.5, intense whistlers with an amplitude of δBmax / B0 ∼ 0.24 are generated.

Nonlinear interaction of a Gaussian electromagnetic beam with an electrostatic lower-hybrid wave: Brillouin scattering

1981 ◽  
Vol 25 (3) ◽  
pp. 403-412
Author(s):  
M. S. Sodha ◽  
Tarsem Singh ◽  
R. P. Sharma
Keyword(s):  
Magnetic Field ◽  
Intensity Distribution ◽  
Nonlinear Interaction ◽  
Ponderomotive Force ◽  
Brillouin Scattering ◽  
Lower Hybrid ◽  
Hybrid Wave ◽  
Lower Hybrid Wave ◽  
Ion Density ◽  
Plane Transverse

In the present paper we have studied the nonlinear interaction of an electrostatic lower-hybrid wave with a high-power Gaussian EM beam, propagating perpendicular to the static magnetic field in the ordinary mode in a collisionless hot magnetoplasma. On account of the Gaussian intensity distribution of the EM beam in a plane transverse to the direction of propagation, a d.c. component of the ponderomotive force becomes finite and leads to the modification of the background electron/ion density. Thus the electrostatic lower-hybrid wave gets coupled with the pump EM wave. This coupling can lead to the focusing of the lower-hybrid wave and if appropriate conditions are satisfied leads to Brillouin scattering.

Nonlinear interaction of whistler waves in a magnetized plasma with density ducts

2019 ◽  
Vol 26 (10) ◽  
pp. 102104
Author(s):  
T. M. Zaboronkova ◽  
C. Krafft ◽  
N. F. Yashina
Keyword(s):  
Nonlinear Interaction ◽  
Magnetized Plasma ◽  
Whistler Waves

scholarly journals Acceleration of dust particles by vortex ring

2010 ◽  
Vol 77 (2) ◽  
pp. 155-162 ◽  
Author(s):  
ZAHIDA EHSAN ◽  
N. L. TSINTSADZE ◽  
J. VRANJES ◽  
R. KHAN ◽  
S. POEDTS
Keyword(s):  
Magnetic Field ◽  
Vortex Ring ◽  
Nonlinear Interaction ◽  
Pump Wave ◽  
Ponderomotive Force ◽  
Dust Particles ◽  
Potential Candidate ◽  
Tokamak Plasmas ◽  
Circularly Polarized ◽  
Micron Size

AbstractIt is shown that nonlinear interaction between large amplitude circularly polarized EM wave and dusty plasma leads to a non-stationary ponderomotive force, which in turn produces a vortex ring and magnetic field. Then the ensuing vortex ring in the direction of propagation of the pump wave can accelerate the micron-size dust particles, which are initially at rest and eventually form a non-relativistic dust jet. This effect is purely non-stationary and unlike linear vortices, dust particles do not rotate here. Specifically, it is pointed out that the vortex ring or closed filament can become potential candidate for the acceleration of dust in tokamak plasmas.

Ponderomotive force induced nonlinear interaction between powerful terahertz waves and plasmas

Optik ◽  
2018 ◽  
Vol 175 ◽  
pp. 250-255 ◽  
Author(s):  
Ying Wang ◽  
Chengxun Yuan ◽  
Yonggan Liang ◽  
Jingfeng Yao ◽  
Zhongxiang Zhou
Keyword(s):  
Nonlinear Interaction ◽  
Ponderomotive Force ◽  
Terahertz Waves
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