Rayleigh Taylor instability in a dusty plasma |
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| Authors: | S Sen A Fukuyama F Honary |
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| Institution: | 1. School of Mechanical and Electrical Engineering, University of Southern Queensland, Toowoomba, QLD 4350, Australia;2. Department of Mechanical Engineering, Faculty of Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117575, Singapore;1. Department of Physics, The University of Azad Jammu and Kashmir, Muzaffarabad, Azad Kashmir 13100, Pakistan;2. National Center for Physics, Quaid-e-Azam University Campus, Shahdra Valley Road, Islamabad 44000, Pakistan |
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| Abstract: | A non-local theory is developed to study the Rayleigh–Taylor instability in an inhomogeneous dusty plasma in the presence of a uniform magnetic field. Using the fluid equations and the dynamics of charged dust grains, an eigenmode equation is derived to study the stability of the mode. Typical space parameters in the vicinity of Saturn are used to investigate the stability of the mode. The growth rate of the Rayleigh–Taylor is found to be drastically higher in a dusty plasma than in a pure plasma. This might have a wider consequence in explaining the origin of low-frequency modes in various situations in the space atmosphere. The effects of the dust charge, and the dust density on the growth rate of the instability are also studied. |
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