A stainless-steel tube (left) is filled with liquid rubidium and inserted inside a probe (right) that holds pickup and compensation coils for detecting resonant energy transfers between magnetosonic and Alfvén waves at high pulsed magnetic fields (< 63 T).
From the article:
Mode Conversion and Period Doubling in a Liquid Rubidium Alfvén-Wave Experiment with Coinciding Sound and Alfvén SpeedsF. Stefani, J. Forbriger, Th. Gundrum, T. Herrmannsdörfer, and J. Wosnitza
Phys. Rev. Lett. 127, 275001 (2021)
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