Related Experiment Video
Updated: Aug 8, 2026

Ensemble Force Spectroscopy by Shear Forces
Published on: July 26, 2022
Laboratory observation of a nonlinear interaction between shear Alfvén waves
T A Carter1, B Brugman, P Pribyl
1Department of Physics and Astronomy, University of California, Los Angeles, California 90095-1547, USA. tcarter@physics.ucla.edu
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 (deltaB/B) of the interacting Alfvén waves.
Related Concept Videos
Interference and Superposition of Waves
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
Interference and Diffraction
Equations of Wave Motion
Propagation of Waves
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
Relation Between the Distributed Load and Shear
Sound Waves: Interference

