Abstract
An experimental investigation of nonlinear interactions between shear Alfvén waves in a laboratory plasma is presented. Two Alfvén waves, generated by a resonant cavity, are observed to beat together, driving a pseudomode at the beat frequency. The pseudomode then scatters the Alfvén waves, generating a series of sidebands. The observed interaction is very strong, with the normalized amplitude of the driven pseudomode comparable to the normalized magnetic field amplitude () of the interacting Alfvén waves.
- Received 22 September 2005
DOI:https://doi.org/10.1103/PhysRevLett.96.155001
©2006 American Physical Society