Effects of axial magnetic field and nonextensivity on small amplitude dust acoustic solitary waves in dusty plasma

2018 ◽  
Vol 59 (2) ◽  
pp. 252-264 ◽  
Author(s):  
Z. Rezaiinia ◽  
T. Mohsenpour ◽  
S. Mirzanejhad
Keyword(s):  
Magnetic Field ◽  
Dusty Plasma ◽  
Solitary Waves ◽  
Small Amplitude ◽  
Axial Magnetic Field ◽  
Dust Acoustic Solitary Waves ◽  
Dust Acoustic

Large Amplitude Solitary Waves in a Four-Component Dusty Plasma with Nonthermal Ions

2008 ◽  
Vol 63 (7-8) ◽  
pp. 393-399 ◽  
Author(s):  
Prasanta Chatterjee ◽  
Kaushik Roy
Keyword(s):  
Dusty Plasma ◽  
Solitary Waves ◽  
Soliton Solution ◽  
Large Amplitude ◽  
Small Amplitude ◽  
Sagdeev Potential ◽  
Ion Distribution ◽  
Dust Acoustic Solitary Waves ◽  
Dust Acoustic ◽  
Pseudo Potential

Dust acoustic solitary waves are studied in a four-component dusty plasma. Positively and negatively charged mobile dust and Boltzmann-distributed electrons are considered. The ion distribution is taken as nonthermal. The existence of a soliton solution is determined by the pseudo-potential approach. It is shown that in small amplitude approximation our result obtained from the Sagdeev potential technique reproduce the result obtained by Sayed and Mamun [Phys. Plasmas 14, 014501 (2007)] provided one cosiders the nonthermal distribution for ions.

Non-extensive effects on the characteristics of dust-acoustic solitary waves in magnetized dusty plasma with two-temperature isothermal ions

2014 ◽  
Vol 80 (4) ◽  
pp. 565-579 ◽  
Author(s):  
Akbar Sabetkar ◽  
Davoud Dorranian
Keyword(s):  
Magnetic Field ◽  
Dusty Plasma ◽  
Solitary Waves ◽  
Reductive Perturbation Method ◽  
Magnetized Dusty Plasma ◽  
Dust Acoustic Solitary Waves ◽  
Dust Acoustic ◽  
Cold Dust ◽  
The Magnetic Field ◽  
Two Temperature

The nonlinear Zakharov–Kuznetsov and the modified Zakharov–Kuznetsov equations are derived for dust-acoustic solitary waves (DASWs) in a magnetized four-component dusty plasma system comprising negatively charged cold dust, non-extensive electrons, and two-temperature thermal ions using standard reductive perturbation method. The combined effects of electron non-extensivity, strength of magnetic field, and its obliqueness on the DASWs profile are analyzed. Different ranges of non-extensive q-parameter are considered. Our results show that solitary waves, that their amplitude and width of which depend sensitively on the q-non-extensive parameter, can exist. Due to electron non-extensivity, our dusty plasma model can admit positive potential as well as negative potential solitons. The strength of magnetic field has no effect on the amplitude of solitary waves, whereas its obliqueness affects both amplitude and width of the solitary waves structure. Results show that the amplitude of soliton increases with increasing the velocity of soltion. For any magnitude of q there is an extremum for the direction of the magnetic field at which the width of soliton is maximum.

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