Experimental study of nonlinear dust acoustic solitary waves in a dusty plasma

Abstract

The excitation and propagation of finite amplitude low frequency solitary waves are investigated in an Argon plasma impregnated with kaolin dust particles. A nonlinear longitudinal dust acoustic solitary wave is excited by pulse modulating the discharge voltage with a negative potential. It is found that the velocity of the solitary wave increases and the width decreases with the increase of the modulating voltage, but the product of the solitary wave amplitude and the square of the width remains nearly constant. The experimental findings are compared with analytic soliton solutions of a model Kortweg-de Vries equation.

arXiv commentThe manuscripts includes six figures

References in corpus (1)

• Experimental observation of strong coupling effects on the dispersion of dust acoustic waves in a plasma

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