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Effect of rippled laser beam on excitation of ion acoustic wave
Authors:Nareshpal Singh Saini  Tarsem Singh Gill
Institution:(1) Department of Physics, Guru Nanak Dev University, 143 005 Amritsar, India
Abstract:Growth of a radially symmetrical ripple, superimposed on a Gaussian laser beam in collisional unmagnetised plasma is investigated. From numerical computation, it is observed that self-focusing of main beam as well as ripple determine the growth dynamics of ripple with the distance of propagation. The effect of growing ripple on excitation of ion acoustic wave (IAW) has also been studied.
Keywords:Self-focusing  ion acoustic wave  growth  collisional plasma
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