Abstract
Axisymmetric mode oscillations of a magnetic fluid column supported by a magnetic field are examined experimentally in the presence of gravity. A magnetic fluid column, height 9.78 mm, is formed vertically in a magnetic field generated by Helmholtz like coils fastened on an electrodynamic exciter, and vibrated vertically to produce axisymmetric oscillations. Nonlinear jumping phenomena, transition from the (0, 1) mode standing wave to the progressive wave and mode coupling are observed at larger amplitude oscillations. One-half subharmonic oscillations such as the (3, 1), (4, 1) and (5, 1) modes arise beyond some threshold values of the excitation amplitude. These new phenomena are useful to discuss the liquid column oscillations in a microgravity environment in the Floating Zone Technique.
