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Central Impurity Transport in ASDEX Upgrade H-Mode Discharges

R. Dux, C. Fuchs, A. Gude, A. Kallenbach, R. Neu

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Abstract

In earlier investigations of the radial impurity transport in the confined plasma of ASDEX Up-grade the diffusion coefficient was found to show a strong decrease towards the plasma center [1]. The central D was measured to be in the range of 0.3–0.6 m2/s for H-,CDH- and L-mode discharges. These measurements were time averaged and did not distinguish between ’undis-

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What this paper is about

In earlier investigations of the radial impurity transport in the confined plasma of ASDEX Up-grade the diffusion coefficient was found to show a strong decrease towards the plasma center [1]. The central D was measured to be in the range of 0.3–0.6 m2/s for H-,CDH- and L-mode discharges. These measurements were time averaged and did not distinguish between ’undis-

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Available abstract

In earlier investigations of the radial impurity transport in the confined plasma of ASDEX Up-grade the diffusion coefficient was found to show a strong decrease towards the plasma center [1]. The central D was measured to be in the range of 0.3–0.6 m2/s for H-,CDH- and L-mode discharges. These measurements were time averaged and did not distinguish between ’undis-

Key concepts: ASDEX Upgrade, Impurity, Atomic physics, Mode (computer interface), Materials science, Plasma, Chemistry, Physics

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