Effect of kappa distribution function on EMIC instability in cusp region

2019 ◽  
Author(s):  
Rana Meda ◽  
G. Ahirwar
Keyword(s):  
Distribution Function ◽  
Kappa Distribution ◽  
Cusp Region ◽  
Kappa Distribution Function

Multi-component dense plasma with ion and super-thermal electrons with kappa distribution

2021 ◽  
pp. 2050006
Author(s):  
Abdolrasoul Gharaati ◽  
Mandana Mohammadi ◽  
Leila Rejaei
Keyword(s):  
Distribution Function ◽  
Nonthermal Plasma ◽  
Nonthermal Electron ◽  
Nonlinear Phenomena ◽  
Kappa Distribution ◽  
Sagdeev Potential ◽  
Multiple Particles ◽  
Component Plasma ◽  
The Stability ◽  
Kappa Distribution Function

The soliton waves are one of the nonlinear phenomena which can propagate in the different types of plasma such as multiple particles of plasma, nonthermal plasma, and space plasma. Using the Sagdeev potential technique, the stability conditions of the soliton waves in the nonthermal plasma have been theoretically studied. One of the significant factors that can affect the propagation of the soliton waves is the distribution function such as nonMaxwellian distribution function or Kappa distribution function. In this paper, we try to investigate the soliton wave in the unmagnetized multi-component plasma consisting of the nonthermal electron and the nonthermal ion, positron and dust with Kappa distribution function. Then by using the Sagdeev potential, the nonlinear equation for the potential is obtained and then the compression and rarefaction soliton waves are computed with the numerical method for this nonlinear wave. Finally, by imposing the Sagdeev potential condition, we discuss the stability of these soliton waves.

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