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Author(s):
K. Itoh, K. Iguchi and S. -I. Itoh
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Title:
Beta Limit of Resistive Plasma in Torsatron/Heliotron
Date of publication:
Feb. 1992
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Key words:
beta limit, interchange instability, magnetic hill, torsatron/heliotron, resistivity, current diffusivity, anomalous transport
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Abstract:
Stability against the interchange mode in the Torsatron/ Heliotron device is investigated, takihg into account the effects of the resistivity, current diffusivity, ion viscosity and thermal diffusivity. Critical beta for the low-mode-number stability is found at the finite beta value. For the range of plasma parameters of the present experiments, the resistive mode and current diffusive mode set comparable critical beta values, which are consistent with experimental observations. In future high temperature plasmas, the current diffusive mode determines the stability limit for the global mode.กกกก
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