Nonplanar dust acoustic solitary and rogue waves in an ion beam plasma with superthermal electrons and ions

Nimardeep KAUR; Kuldeep SINGH; Yashika GHAI; N S SAINI

doi:10.1088/2058-6272/aac37a

Plasma Science and Technology > 2018 > 20(7): 74009-074009. > DOI: 10.1088/2058-6272/aac37a

Nimardeep KAUR, Kuldeep SINGH, Yashika GHAI, N S SAINI. Nonplanar dust acoustic solitary and rogue waves in an ion beam plasma with superthermal electrons and ions[J]. Plasma Science and Technology, 2018, 20(7): 74009-074009. DOI: 10.1088/2058-6272/aac37a

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Nonplanar dust acoustic solitary and rogue waves in an ion beam plasma with superthermal electrons and ions

Guru Nanak Dev University, Amritsar-143005, India

Funds: The authors also acknowledge DRS-II (SAP) no. F 530/17/DRS-II/2015 (SAP-I) University Grants Commission, New Delhi, India.

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Received Date: November 29, 2017

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Abstract

Abstract

The propagation characteristics of dust acoustic solitary and rogue waves are investigated in an unmagnetized ion beam plasma with electrons and ions following kappa-type distribution in nonplanar geometry. The reductive perturbation method (RPM) is employed to derive the cylindrical/spherical Korteweg–de Vries (KdV) equation, which is further transformed into standard KdV equation by neglecting the geometrical effects. Using new stretching coordinates, nonlinear Schr?dinger equation (NLSE) has been derived from the standard KdV equation to study the different order rational solutions of dust acoustic rogue waves (DARWs). The impact of various physical parameters on the characteristics of dust acoustic solitary waves (DASWs) is elaborated specifically in nonplanar geometry. Further, the effects of ion beam and superthermality of electrons/ions on the characteristics of DARWs are studied. The results obtained in the present investigation may be useful in comprehending a variety of phenomena in Earth's magnetosphere polar cap region where the presence of positive ion beam has been detected and also in other regions of space/astrophysical environments where dust along with superthermal electrons and ions exists.
- dust acoustic,
- ion beam,
- kappa distribution,
- rogue waves

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References (43)

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