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Author(s):
H. Iguchi, K. Ida, H. Yamada, K. Itoh, S.-I. Itoh, K. Matsuoka, S. Okamura, H. Sanuki, I. Yamada, H. Takenaga, K. Uchino, K. Muraoka
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Title:
The Effect of Magnetic Field Configuration on Particle Pinch Velocity in Compact Helical System (CHS)
Date of publication:
Jan. 1993
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Key words:
anomalous particle transport, particle pinch velocity, non-diffusive particle flow, CHS heliotron/torsatron, magnetic configuration
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Abstract:
Radial particle transport has been experimentally studied in the low-aspect-ratio heliotron/torsatron device CHS. A non-diffusive outward particle flow (inverse pinch) is observed in the magnetic configuration with the magnetic axis shifted outward, while an inward pinch, like in tokamaks, is observed with the magnetic axis shifted inward. This change in the direction of anomalous particle flow is not due to the reversal of temperature gradient nor the radial electric field. The observation suggests that the particle pinch velocity is sensitive to the magnetic field structure.
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