oaioai:nifs-repository.repo.nii.ac.jp:00000638

Tomography of (2, 1) and (3, 2) magnetic island structures on Tokamak Fusion Test Reactor

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Publication date
1 July 1996
Publisher
American Institute of Physics
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    Abstract

    High-resolution electron cyclotron emission (ECE) image reconstruction has been used to observe (m,n)=(2,1) and (3, 2) island structures on Tokamak Fusion Test Reactor [Plasma Phys. Controlled. Fusion 33, 1509 (1991)], where m and n are the poloidal and the toroidal mode number, respectively. The observed island structure is compared with other diagnostics, such as soft x-ray tomography and magnetic measurements. A cold elliptic island is observed after lithium pellet injection. Evidence for the enhancement of the heat transfer due to the island is observed. A relaxation phenomenon due to the m=2 mode is newly observed in Ohmic plasmas.journal articl

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