Phys. Rev. E 71, 047301 (2005) [4 pages]Dynamic behavior of a liquid metal interface under the influence of a high-frequency magnetic fieldReceived 23 March 2004; published 14 April 2005 We present experimental results on the stability of a free liquid metal surface influenced by an alternating magnetic field. The field is generated by an inductor fed by a high-frequency electrical current. The experimental setup consists of an annulus filled with the liquid metal galinstan. We observe three kinds of instabilities: exciting of capillary waves, a static high-amplitude surface deformation, and eventually an electromagnetic pinch at a critical inductor current Icp. The data show that Icp correlates directly with the current frequency and the geometric parameters. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.71.047301
DOI:
10.1103/PhysRevE.71.047301
PACS:
47.20.Lz, 47.65.+a
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