Arc oscillations in a horizontal rare-earth metal iodide/cesium iodide/mercury arc induced by an external magnetic field
- 15 March 1979
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 34 (6) , 357-359
- https://doi.org/10.1063/1.90804
Abstract
A novel type of periodic motion has been observed in a horizontal 50‐Hz ac DyI3/CsI/Hg arc, placed in a magnetic field perpendicular to the arc axis. The arc oscillates in the vertical plane with frequencies of 0.5–5 Hz. A mechanism involving a time‐varying arc constriction due to periodic metal iodide evaporation and condensation is discussed in terms of the balance between Lorentz force and buoyant forces.Keywords
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