Abstract

Experimental observations of the high-energy ions (g 10 keV/Z), expanding from a laser-produced plasma, have shown strong evidence of coronal electrostatic fields. In this paper, it is shown by a linear analysis that a multispecies streaming plasma can be subject to a two-stream ion-ion instability leading to density modulations. The effect of the charge-to-mass ratio on growth rate for different species accelerated by the same background electric field has been investigated. The theoretical model is consistent with experimental observations.

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