Electron-ion collisional effect on Weibel instability in a Kappa distributed unmagnetized plasma

2014 ◽  
Vol 21 (4) ◽  
pp. 042106 ◽  
Author(s):  
Deep Kumar Kuri ◽  
Nilakshi Das
Keyword(s):  
Weibel Instability ◽  
Collisional Effect ◽  
Unmagnetized Plasma

scholarly journals Weibel instabilities in dense quantum plasmas

2008 ◽  
Vol 74 (4) ◽  
pp. 431-436 ◽  
Author(s):  
LEVAN N. TSINTSADZE ◽  
P. K. SHUKLA
Keyword(s):  
Quantum Effect ◽  
Intense Laser ◽  
Landau Damping ◽  
Kinetic Regime ◽  
Weibel Instability ◽  
Solid Density ◽  
Quantum Plasmas ◽  
Astrophysical Objects ◽  
Unmagnetized Plasma ◽  
Density Plasma

AbstractThe quantum effect on the Weibel instability in an unmagnetized plasma is presented. Our analysis shows that the quantum effect tends to stabilize the Weibel instability in the hydrodynamic regime, whereas it produces a new oscillatory instability in the kinetic regime. A novel effect called the quantum damping, which is associated with the Landau damping, is disclosed. The new quantum Weibel instability may be responsible for the generation of non-stationary magnetic fields in compact astrophysical objects as well as in the forthcoming intense laser–solid density plasma interaction experiments.

Parametric excitation in an inhomogeneous plasma

1971 ◽  
Vol 5 (1) ◽  
pp. 107-113 ◽  
Author(s):  
C. S. Chen
Keyword(s):  
Electric Field ◽  
Parametric Excitation ◽  
Growth Rates ◽  
Inhomogeneous Plasma ◽  
Electron Plasma ◽  
Transverse Waves ◽  
Circularly Polarized ◽  
Polarized Waves ◽  
Oscillating Electric Field ◽  
Unmagnetized Plasma

An infinite, inhomogeneous electron plasma driven by a spatially uniform oscillating electric field is investigated. The multi-time perturbation method is used to analyze possible parametric excitations of transverse waves and to evaluate their growth rates. It is shown that there exist subharmonic excitations of: (1) a pair of transverse waves in an unmagnetized plasma and (2) a pair of one right and one left circularly polarized wave in a magnetoplasma. Additionally, parametric excitation of two right or two left circularly polarized waves with different frequencies can exist in a magnetoplasma. The subharmonic excitations are impossible whenever the density gradient and the applied electric field are perpendicular. However, parametric excitation is possible with all configurations.

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