Hydromagnetic Wave in a Toroidal Discharge with Longitudinal Magnetic Field

A regular hydromagnetic oscillation in a simple toroidal discharge has been found for the first time. The externally applied longitudinal magnetic field and high degree of ionization are essential to generation of the oscillation. The observation by magnetic probes and streak camera shows that a pla...

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Bibliographic Details
Published in:Journal of applied physics 1965-10, Vol.36 (10), p.3295-3299
Main Authors: Itoh, Satoshi, Fujisawa, Noboru, Miyajima, Shigeki, Yamamoto, Kenzo
Format: Article
Language:English
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Summary:A regular hydromagnetic oscillation in a simple toroidal discharge has been found for the first time. The externally applied longitudinal magnetic field and high degree of ionization are essential to generation of the oscillation. The observation by magnetic probes and streak camera shows that a plasma column of the m=1 helix rotates in the direction of right-handed screw to the applied magnetic field. The wavelength of helix and rotational frequency depend on the pressure, ion mass, and applied magnetic field. The phase velocity of the plasma helix coincides with the Alfvén velocity.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1702970