Abstract

Experimental results are presented on localized MHD disturbances in a plasma contained in a uniform magnetic field. The disturbances were generated by small antennae and observations were made downstream with magnetic probes to determine the extent to which the wave packet would be guided by the magnetic field. The acoustic wave was found to be strongly localized along field lines, the shear AlfvCn wave was less strongly localized and the fast Alfven wave was not localized, in agreement with theoretical expectations.

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