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Density Modulation Experiments on HT-7 Tokamak |
| K. Tanaka1;GAO Xiang2;JIE Yin-Xian2;R. Sakamoto1;K. Toi1 |
| 1National Institute for Fusion Science, 322-6 Oroshi-cho, Toki, Japan
2Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 |
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| Cite this article: |
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K. Tanaka, GAO Xiang, JIE Yin-Xian et al 2004 Chin. Phys. Lett. 21 2458-2460 |
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Abstract Density modulation experiments are successfully conducted on HT-7 ohmic discharge to investigate particle transport coefficients: diffusion coefficients D and convection velocity V. The particle transport is studied at low (1.5×1019m-3) and high (3×1019 m-3) density regimes. The clear differences are observed that D is 0.42m2/s and 0.17m2/s, V is 4.7m/s (outward) and 1.6 m/s (inward) for low and high density plasmas respectively, where spatially constant D and V(r) = (r/a)V0 were assumed for the analysis.
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| Keywords:
52.25.Fi
52.55.Fa
52.50.Sw
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Published: 01 December 2004
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| PACS: |
52.25.Fi
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(Transport properties)
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52.55.Fa
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(Tokamaks, spherical tokamaks)
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52.50.Sw
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(Plasma heating by microwaves; ECR, LH, collisional heating)
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