Observation of intermittent structures associated with the low‐frequency turbulence in toroidal magnetized plasma

1994 ◽  
Vol 1 (9) ◽  
pp. 2926-2930 ◽  
Author(s):  
A. K. Singh ◽  
Y. C. Saxena
Keyword(s):  
Low Frequency ◽  
Magnetized Plasma

scholarly journals Electron acoustic solitons in the Earth's magnetotail

2004 ◽  
Vol 11 (2) ◽  
pp. 215-218 ◽  
Author(s):  
S. G. Tagare ◽  
S. V. Singh ◽  
R. V. Reddy ◽  
G. S. Lakhina
Keyword(s):  
Electron Beam ◽  
Small Amplitude ◽  
Low Frequency ◽  
Frequency Component ◽  
Magnetized Plasma ◽  
Cold Electron ◽  
Ion Plasma ◽  
Electron Acoustic ◽  
Two Temperature ◽  
Perpendicular Polarization

Abstract. Small amplitude electron - acoustic solitons are studied in a magnetized plasma consisting of two types of electrons, namely cold electron beam and background plasma electrons and two temperature ion plasma. The analysis predicts rarefactive solitons. The model may provide a possible explanation for the perpendicular polarization of the low-frequency component of the broadband electrostatic noise observed in the Earth's magnetotail.

Turbulent diffusion in two-dimensional, strongly magnetized plasmas

1985 ◽  
Vol 34 (1) ◽  
pp. 77-94 ◽  
Author(s):  
H. L. Pécseli ◽  
T. Mikkelsen
Keyword(s):  
Turbulent Transport ◽  
Low Frequency ◽  
Two Dimensions ◽  
Magnetized Plasma ◽  
Two Dimensional ◽  
Drift Wave Turbulence ◽  
Field Fluctuations ◽  
The Mean ◽  
Wavenumber Spectrum ◽  
Convective Cells

Particle diffusion is investigated in a strictly two-dimensional collisionless guiding-centre model for a strongly magnetized plasma. An analytical expression is presented for the entire time variation of the mean square test-particle displacement in the limit of low-frequency, strongly turbulent, electric field fluctuations. The analysis relies on an explicit integral expression for the Lagrangian autocorrelation function in terms of the Eulerian wavenumber spectrum and a time-varying weight function. Bohm diffusion is discussed by means of a simple model spectrum. The analysis applies for turbulent transport associated with electrostatic convective cells, magnetostatic cells and drift wave turbulence with the assumption of local homogeneity and isotropy in two dimensions.

Low-frequency fluctuations in a pure toroidal magnetized plasma

Pramana ◽  
2009 ◽  
Vol 73 (6) ◽  
pp. 1073-1086 ◽  
Author(s):  
P. K. Sharma ◽  
R. Singh ◽  
D. Bora
Keyword(s):  
Low Frequency ◽  
Magnetized Plasma ◽  
Frequency Fluctuations

Spatiotemporal structure of low frequency waves in a magnetized plasma device

2003 ◽  
Vol 314 (1-2) ◽  
pp. 163-167 ◽  
Author(s):  
M. Matsukuma ◽  
Th. Pierre ◽  
A. Escarguel ◽  
D. Guyomarc'h ◽  
G. Leclert ◽  
...  
Keyword(s):  
Low Frequency ◽  
Magnetized Plasma ◽  
Spatiotemporal Structure ◽  
Plasma Device ◽  
Low Frequency Waves

Nonlinear interaction of electron acoustic waves with Langmuir waves in presence of magnetic field in plasmas

2014 ◽  
Vol 81 (1) ◽  
Author(s):  
Manjistha Dutta ◽  
Manoranjan Khan ◽  
Nikhil Chakrabarti
Keyword(s):  
Magnetic Field ◽  
Nonlinear Interaction ◽  
Acoustic Waves ◽  
Low Frequency ◽  
Acoustic Mode ◽  
Magnetized Plasma ◽  
Langmuir Waves ◽  
Coupled Equations ◽  
Electron Acoustic Wave ◽  
Electron Acoustic

Nonlinear interaction between Langmuir waves and Electron Acoustic Wave (EAW) is being studied in a warm magnetized plasma in presence of two intermingled fluids, hot electrons, and cold electrons while ions forming static background. Two-fluid, two-timescale theory is performed to derive modified Zakharov's equations in a magnetized plasma. These coupled equations describe low-frequency response of electron density due to high-frequency electric field along with magnetic field perturbations. Linear analysis shows coupling between acoustic mode, upper hybrid mode, and cyclotron modes. These modes are found to be modified due to the presence of two electron components. These equations are significant in the context of weak and strong turbulence.

The MaPLE device: A linear machine for laboratory studies of the magnetized plasma physics phenomena

2014 ◽  
Vol 81 (2) ◽  
Author(s):  
Subir Biswas ◽  
Satyajit Chowdhury ◽  
Abhik M. Pal ◽  
Shashwat Bhattacharya ◽  
Subhasis Basu ◽  
...  
Keyword(s):  
Plasma Physics ◽  
Nuclear Physics ◽  
Electron Cyclotron Resonance ◽  
Low Frequency ◽  
Nonlinear Behavior ◽  
Magnetized Plasma ◽  
Drift Waves ◽  
Weak Density ◽  
Plasma Characteristics ◽  
Shear Alfven Waves

The Magnetized Plasma Linear Experimental (MaPLE) device is developed in the plasma physics laboratory of the Saha Institute of Nuclear Physics for studying basic plasma physics phenomena like waves, instabilities and their nonlinear behavior in magnetized plasma. Details description of the device and its plasma characteristics are presented. The machine provides flexibilities in terms of magnetic configuration and plasma sources. Recently, low frequency drift waves are excited in the weak density gradient region of electron cyclotron resonance (ECR) produced low density plasmas and their nonlinear coupling is studied. Results of this experiment and some more experiments done in the device are summarized. Reasoning behind a possible upgrade plan of the device for studying shear Alfven waves (SAW) and magnetic drift waves in future is also discussed.

Low-Frequency Instabilities in Magnetized Plasma with Nonuniformly Compressed Flow

1974 ◽  
Vol 32 (11) ◽  
pp. 578-581 ◽  
Author(s):  
Mitsuhiro Nambu ◽  
Tsutomu Tamao
Keyword(s):  
Low Frequency ◽  
Magnetized Plasma

Observation of fluctuation-driven particle flux reduction by low-frequency zonal flow in a linear magnetized plasma

2015 ◽  
Vol 22 (1) ◽  
pp. 012306 ◽  
Author(s):  
R. Chen ◽  
J. L. Xie ◽  
C. X. Yu ◽  
A. D. Liu ◽  
T. Lan ◽  
...  
Keyword(s):  
Particle Flux ◽  
Low Frequency ◽  
Zonal Flow ◽  
Magnetized Plasma

Spectra of langmuir waves in a magnetized plasma with low-frequency turbulence

2004 ◽  
Vol 30 (9) ◽  
pp. 756-760 ◽  
Author(s):  
T. M. Burinskaya ◽  
J. L. Rauch ◽  
M. M. Mogilevskii
Keyword(s):  
Low Frequency ◽  
Magnetized Plasma ◽  
Langmuir Waves
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