In this investigation, the effect of polarization force on dust acoustic solitary waves (DASWs) has been presented in a dusty plasma composed of Maxwellian electrons, vortex-like (trapped) ions, and negatively charged mobile dust grains. It has been found that from the Maxwellian ions distribution to a vortex-like one, the dynamics of small but finite amplitude DA solitary waves is governed by a nonlinear equation of modified Korteweg–de Vries (mKdV) type instead of KdV. The combined effect of trapped ions and polarization force strongly influence the characteristics of DASWs. Only rarefactive solitary structures are formed under the influence of ions trapping and polarization force. The implications of our results are useful in real astrophysical situations of space and laboratory dusty plasmas.
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5 January 2018
DIVERSE WORLD OF DUSTY PLASMAS: Proceedings of the 8th International Conference on the Physics of Dusty Plasmas
20–25 May 2017
Prague, Czech Republic
Research Article|
January 05 2018
Modified KdV equation for trapped ions in polarized dusty plasma
K. Singh;
K. Singh
b)
1
Guru Nanak Dev University
, Amritsar, Punjab, India
-143005
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N. Kaur;
N. Kaur
a)
1
Guru Nanak Dev University
, Amritsar, Punjab, India
-143005
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P. Sethi;
P. Sethi
1
Guru Nanak Dev University
, Amritsar, Punjab, India
-143005
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N. S. Saini
N. S. Saini
1
Guru Nanak Dev University
, Amritsar, Punjab, India
-143005
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a)
Corresponding author: nimarphy@gmail.com
AIP Conf. Proc. 1925, 020014 (2018)
Citation
K. Singh, N. Kaur, P. Sethi, N. S. Saini; Modified KdV equation for trapped ions in polarized dusty plasma. AIP Conf. Proc. 5 January 2018; 1925 (1): 020014. https://doi.org/10.1063/1.5020402
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