Damping of Radial Oscillation of A Toroidal Pinch Plasma

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概要

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• Damping of radial oscillation which is observed in the early phase of pinch discharges is studied in a toroidal pinch machine, STP-2. Since the experiment is carried out in the toroidal machine, it becomes possible to ignore the endloss effect which cannot be avoided in linear machines. The temporal evolution of the oscillation is measured with a diamagnetic loop, and the plasma temperature and density are obtained by laser scattering. The temperature varies from 5 to 30 eV, and the density from 2×10^<15> to 1×10^<16>/cm^3. The temperature dependence of the observed damping time is compared with the result calculated from MHD equations which include dissipation terms. It is shown that the oscillation damps due to resistivity at low temperature while ion viscous damping is dominant at high temperature.

• 核融合科学研究所の論文

著者

• Mimura Mikio

  Research Information Center Institute Of Plasma Physics Nagoya University

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• Damping of Radial Oscillation of A Toroidal Pinch Plasma

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