Experiments of Axial Compression of Flux-Core Spheromak

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概要

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• The axial compression of flux-core spheromaks is successfully made in the TS-3 facility. Magnetic measurements show that oblate and singlet magnetic configurations are obtained by the axial compression. The closed poloidal magnetic flux surrounding the magnetic axis increases up to 6 mWb, that is three or four times larger than the closed poloidal magnetic flux obtained without the axial compression. During the early and middle phases of the compression, no global instabilities are observed, but, in the late phase, sudden collapses of the flux-core spheromak are observed. This may limit the maximum compression ratio. Fitting to an equilibrium model suggests that, by the axial compression, the ratio μ of the current density to the magnetic field, increases toward the value of the conventional spheromak without core flux.

• 社団法人日本物理学会の論文
• 1993-05-15

著者

• Katsurai M

  Univ. Tokyo Tokyo

• Morita A

  Department Of Electrical Engineering Faculty Of Engineering University Of Tokyo

• Katsurai Makoto

  Department Of Advanced Energy Graduate School Of Frontier Sciences The University Of Tokyo

• Amemiya N

  Division Of Electrical And Computer Engineering Faculty Of Engineering Yokohama National University

• Amemiya Naoyuki

  Division Of Electrical And Computer Engineering Yokohama National University

• Morita Ayumu

  Department of Electrical Engineering, Faculty of Engineering, University of Tokyo

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