Mode Conversion and Period Doubling at Plasma-$\beta$ Unity in an Alfv\'en-Wave Experiment with Liquid Rubidium
Plasma Physics
2023-01-11 v1 Solar and Stellar Astrophysics
Fluid Dynamics
Space Physics
Abstract
We report Alfv\'en-wave experiments with liquid rubidium at the Dresden High Magnetic Field Laboratory (HLD). Reaching up to 63 T, the pulsed magnetic field exceeds the critical value of 54 T at which the Alfv\'en speed becomes equal to the sound speed (plasma- unity). At this threshold we observe a period doubling of an applied 8 kHz CW excitation, a clear footprint for a parametric resonance between magnetosonic waves and Alfv\'en waves.
Keywords
Cite
@article{arxiv.2010.15565,
title = {Mode Conversion and Period Doubling at Plasma-$\beta$ Unity in an Alfv\'en-Wave Experiment with Liquid Rubidium},
author = {F. Stefani and J. Forbriger and Th. Gundrum and T. Herrmannsdörfer and J. Wosnitza},
journal= {arXiv preprint arXiv:2010.15565},
year = {2023}
}
Comments
5 pages, 4 figures