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Investigation of turbulence in reversed field pinch plasma by using microwave imaging reflectometry
Author(s) -
Zhaopeng Shi,
Y. Nagayama,
S. Yamaguchi,
Y. Hamada,
Y. Hirano,
S. Kiyama,
H. Koguchi,
C. Michael,
Hajime Sakakita,
Kiyoyuki Yambe
Publication year - 2011
Publication title -
physics of plasmas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.75
H-Index - 160
eISSN - 1089-7674
pISSN - 1070-664X
DOI - 10.1063/1.3652848
Subject(s) - physics , reversed field pinch , pinch , plasma , dynamo , turbulence , reflectometry , microwave , magnetohydrodynamics , magnetic field , plasma diagnostics , toroid , computational physics , atomic physics , mechanics , nuclear physics , time domain , quantum mechanics , computer science , computer vision
Turbulence in the reversed field pinch (RFP) plasma has been investigated by using the microwave imaging reflectometry in the toroidal pinch experiment RX (TPE-RX). In conventional RFP plasma, the fluctuations are dominated by the intermittent blob-like structures. These structures are accompanied with the generation of magnetic field, the strong turbulence, and high nonlinear coupling among the high and low k modes. The pulsed poloidal current drive operation, which improves the plasma confinement significantly, suppresses the dynamo, the turbulence, and the blob-like structures. © 2011 American Institute of Physics.

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