Journal
PHYSICS OF PLASMAS
Volume 22, Issue 6, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.4922750
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Funding
- Interim Program for Fresh Ph.D.s by the Higher Education Commission of Pakistan [IPFP/HRD//HEC/2014/3161]
- Cultural Affairs and Missions Sector, Egyptian Ministry of Higher Education
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Employing the reductive perturbation technique, Zakharov-Kuznetzov (ZK) equation is derived for dust acoustic (DA) solitary waves in a magnetized plasma which consists the effects of dust anisotropic pressure, arbitrary charged dust particles, Boltzmann distributed ions, and Kappa distributed superthermal electrons. The ZK solitary wave solution is obtained. Using the small-k expansion method, the stability analysis for DA solitary waves is also discussed. The effects of the dust pressure anisotropy and the electron superthermality on the basic characteristics of DA waves as well as on the three-dimensional instability criterion are highlighted. It is found that the DA solitary wave is rarefactive (compressive) for negative (positive) dust. In addition, the growth rate of instability increases rapidly as the superthermal spectral index of electrons increases with either positive or negative dust grains. A brief discussion for possible applications is included. (C) 2015 AIP Publishing LLC.
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