Abstract

Superthermal electrons are often observed in space and astrophysics, and can be appropriately modeled by the family of kappa distribution functions. The Langmuir solitons are studied in the plasma with kappa-distributed electrons based on the Zakharov equation in the kinetic regime. It is shown that the presence of additional superthermal particles does not make qualitative changes to the important aspect of soliton behavior, but modifies the thickness of solitons.

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