Nonlinear Effects in a Beam Plasma System: Second Harmonic Emission and Density Depression Formation
J A Michel; P J Paris; M Schneider; M Q Tran; J A Michel; Centre de Recherches en Physique des Plasmas, Association Euratom - Confédération Suisse, Ecole Polytechnique Fédérale de Lausanne, 21, Av. des Bains, CH-1007 Lausanne, Switzerland; P J Paris; Centre de Recherches en Physique des Plasmas, Association Euratom - Confédération Suisse, Ecole Polytechnique Fédérale de Lausanne, 21, Av. des Bains, CH-1007 Lausanne, Switzerland; M Schneider; Centre de Recherches en Physique des Plasmas, Association Euratom - Confédération Suisse, Ecole Polytechnique Fédérale de Lausanne, 21, Av. des Bains, CH-1007 Lausanne, Switzerland; M Q Tran; Centre de Recherches en Physique des Plasmas, Association Euratom - Confédération Suisse, Ecole Polytechnique Fédérale de Lausanne, 21, Av. des Bains, CH-1007 Lausanne, Switzerland
Журнал:
Physica Scripta
Дата:
1982-01-01
Аннотация:
The nonlinear evolution of Langmuir waves excited by the beam-plasma instability is studied experimentally. The emission of electromagnetic waves at the second harmonic of the plasma frequency and the formation of a density depression have been observed. These phenomena are consistent with the predictions of the strong Langmuir turbulence theory.
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