Electrostatic waves in inhomogeneous pair-ion plasma

2008 ◽  
Author(s):  
J. Vranjes ◽  
B. P. Pandey ◽  
S. Poedts ◽  
José Tito Mendonça ◽  
David P. Resendes ◽  
...  
Keyword(s):  
Electrostatic Waves ◽  
Ion Plasma

Linear electrostatic waves in a three-component electron-positron-ion plasma

2014 ◽  
Vol 21 (12) ◽  
pp. 122119 ◽  
Author(s):  
A. Mugemana ◽  
I. J. Lazarus ◽  
S. Moolla
Keyword(s):  
Electrostatic Waves ◽  
Ion Plasma ◽  
Electron Positron

Electrostatic waves in the shock ramp and their effect on plasma energetics.

2021 ◽  
Author(s):  
Ahmad Lalti ◽  
Yuri Khotyaintsev ◽  
Daniel Graham ◽  
Andris Vaivad ◽  
Andreas Johlander
Keyword(s):  
Solar Wind ◽  
Acoustic Waves ◽  
Cyclotron Frequency ◽  
Particle Interactions ◽  
Ion Acoustic Waves ◽  
Electrostatic Waves ◽  
Ion Plasma ◽  
Magnetospheric Multiscale ◽  
Bernstein Waves ◽  
Open Question

<p>Energy dissipation at collisionless shocks is still an open question. Wave particle interactions are believed to be at the heart of it, but the exact details are still to be figured out. One type of waves that is known to be an efficient dissipator of solar wind kinetic energy are electrostatic waves in the shock ramp, such as ion acoustic waves with frequency around the ion plasma frequency or Bernstein waves with frequency around the electron cyclotron frequency and its harmonics. The electric field of such waves is typically larger than 100 mV/m, large enough to disturb particle dynamics. In this study we use the magnetospheric multiscale (MMS) spacecraft, to investigate the source and evolution of electrostatic waves in the shock ramp of quasi-perpendicular super-critical shocks, and study their effect on solar wind thermalization.</p>

Low-frequency electrostatic waves in a magnetized, current-free, heavy negative ion plasma

2013 ◽  
Vol 79 (6) ◽  
pp. 1107-1111 ◽  
Author(s):  
S. H. KIM ◽  
R. L. MERLINO ◽  
J. K. MEYER ◽  
M. ROSENBERG
Keyword(s):  
Large Fraction ◽  
Low Frequency ◽  
Negative Ions ◽  
Wave Mode ◽  
Negative Ion ◽  
Electrostatic Wave ◽  
Electrostatic Waves ◽  
Positive Ions ◽  
Ion Plasma ◽  
The Waves

AbstractWe report experimental observations of a low-frequency (≪ ion gyrofrequency) electrostatic wave mode in a magnetized cylindrical (Q machine) plasma containing positive ions, very few electrons and a relatively large fraction (n−/ne > 103) of heavy negative ions (m−/m+ ≈ 10), and no magnetic field-aligned current. The waves propagate nearly perpendicular to B with a multiharmonic spectrum. The maximum wave amplitude coincided spatially with the region of largest density gradient suggesting that the waves were excited by a drift instability in a nearly electron-free positive ion–negative ion plasma

Stability of current-driven electrostatic waves in a magnetized and collisional negative ion plasma

2008 ◽  
Vol 78 (4) ◽  
pp. 045501
Author(s):  
Chandu Venugopal ◽  
Anu Varghese ◽  
Jyothi S ◽  
Molly Issac ◽  
G Renuka
Keyword(s):  
Negative Ion ◽  
Electrostatic Waves ◽  
Ion Plasma

Electrostatic Waves in a Paired Fullerene-Ion Plasma

2005 ◽  
Vol 95 (17) ◽  
Author(s):  
W. Oohara ◽  
D. Date ◽  
R. Hatakeyama
Keyword(s):  
Electrostatic Waves ◽  
Ion Plasma

Speed and Shape of Electrostatic Waves in Dust-Ion Plasma

2006 ◽  
Vol 61 (12) ◽  
pp. 661-666 ◽  
Author(s):  
Prasanta Chatterjee ◽  
Bholanath Sen
Keyword(s):  
Solitary Waves ◽  
Soliton Solution ◽  
Acoustic Waves ◽  
Critical Value ◽  
Magnetized Plasma ◽  
Electrostatic Waves ◽  
Potential Approach ◽  
Ion Plasma ◽  
Dust Acoustic ◽  
Pseudo Potential

Nonlinear dust acoustic waves are studied in a magnetized plasma. Quasineutrality is considered. The existence of a soliton solution is determined by a pseudo-potential approach. Sagdeev’s potential is obtained in terms of U(= αudx +γudz), the component of the dust-ion velocity in the direction of the propagation of the wave. It is shown that there exists a critical value of U, beyond which the solitary waves cease to exist.

Low-frequency drift-induced instabilities in a magnetized two-ion plasma

1986 ◽  
Vol 35 (3) ◽  
pp. 393-412 ◽  
Author(s):  
R. Bharuthram ◽  
M. A. Hellberg
Keyword(s):  
Dispersion Relation ◽  
Numerical Solutions ◽  
Cyclotron Frequency ◽  
Low Frequency ◽  
Frequency Drift ◽  
Transition Diagram ◽  
Electrostatic Waves ◽  
Ion Plasma ◽  
Parameter Values ◽  
A Current

Numerical solutions of a dispersion relation for low-frequency electrostatic waves in a current-carrying, cold, weakly collisional, magnetized two-ion plasma are used to discuss the two-stream and resistive natures of the ion-ion hybrid instability. An instability with analogous behaviour is found to be associated with the light ion cyclotron frequency. Analytical results explain the behaviour. A numerically derived transition diagram summarizes the parameter values for which transitions between different modes take place.

A numerical investigation of current-driven instabilities near the ion-ion hybrid frequency

1984 ◽  
Vol 32 (3) ◽  
pp. 387-398 ◽  
Author(s):  
Diane J. Grayson ◽  
M. A. Hellberg
Keyword(s):  
Dispersion Relation ◽  
Numerical Investigation ◽  
Electrostatic Waves ◽  
Ion Plasma ◽  
Hybrid Frequency ◽  
Parameter Values ◽  
A Current

A dispersion relation for electrostatic waves in a current-carrying, resistive, magnetized, two-ion plasma has been solved numerically for a range of parameter values. The behaviour of the resistive ion-ion hybrid instability is described and in addition a two-stream ion-ion hybrid instability is identified.

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