Open AccessStudy of central plasma structure using soft X-ray signals
Author(s) -
Tingli Ma,
Liqun Hu,
Kaiyun Chen
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.1110
Subject(s) - rotation (mathematics) , plasma , emissivity , physics , position (finance) , tokamak , instability , x ray , magnetohydrodynamics , optics , atomic physics , geometry , mathematics , mechanics , finance , quantum mechanics , economics
A method for studying the central plasma structure using soft X-ray signals in the HT-7 tokamak is reported. Through analysing a typical discharge with MHD instability, the position and rotation direction of magnetic island are obtained from the soft X-ray signals. The magnetic island position and rotation direction are validated from the contour map of soft X-ray emissivity and the m=2 mode rotation direction observed on the Mirnov signals.