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The properties of cylindrical ion acoustic solitons which diverge from the exciter are compared with those of plane solitons. The geometrical expansion of the wave fronts leads to a transition of the solitons to a dispersive oscillatory wave train even if the initial perturbation is a one-dimensional soliton. In this transitional regime good agreement is observed between the experiment and numerical solutions of the cylindrical Korteweg-de Vries equation.
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Chen et al. (1977) studied this question.
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