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Hot spot generated by non-thermal electrons just before disruption in HT-7 tokamak

Published online by Cambridge University Press:  28 May 2010

ERZHONG LI ,
LIQUN HU ,
KAIYUN CHEN ,
BILI LING ,
YONG LIU ,
HONGWEI LU ,
SHIYAO LIN ,
BIAO SHEN  and
XIANG GAO
ERZHONG LI
Affiliation:
Institute of Plasma Physics, Chinese Academy of Science, Hefei, 230031, PR China (rzhonglee@ipp.ac.cn)
LIQUN HU
Affiliation:
Institute of Plasma Physics, Chinese Academy of Science, Hefei, 230031, PR China (rzhonglee@ipp.ac.cn)
KAIYUN CHEN
Affiliation:
Institute of Plasma Physics, Chinese Academy of Science, Hefei, 230031, PR China (rzhonglee@ipp.ac.cn)
BILI LING
Affiliation:
Institute of Plasma Physics, Chinese Academy of Science, Hefei, 230031, PR China (rzhonglee@ipp.ac.cn)
YONG LIU
Affiliation:
Institute of Plasma Physics, Chinese Academy of Science, Hefei, 230031, PR China (rzhonglee@ipp.ac.cn)
HONGWEI LU
Affiliation:
Institute of Plasma Physics, Chinese Academy of Science, Hefei, 230031, PR China (rzhonglee@ipp.ac.cn)
SHIYAO LIN
Affiliation:
Institute of Plasma Physics, Chinese Academy of Science, Hefei, 230031, PR China (rzhonglee@ipp.ac.cn)
BIAO SHEN
Affiliation:
Institute of Plasma Physics, Chinese Academy of Science, Hefei, 230031, PR China (rzhonglee@ipp.ac.cn)
XIANG GAO
Affiliation:
Institute of Plasma Physics, Chinese Academy of Science, Hefei, 230031, PR China (rzhonglee@ipp.ac.cn)
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Abstract

Intense non-thermal radiation spikes were observed prior to energy quench in HT-7 tokamak. The dynamic properties of non-thermal electrons have been analyzed. Observation manifests that some non-thermal electrons are confined in the vicinity of q = 1 magnetic surface which results in hot spot phenomenon just before disruption.

Type
Papers
Information
Journal of Plasma Physics , Volume 77 , Issue 2 , April 2011 , pp. 163 - 168
Copyright
Copyright © Cambridge University Press 2010

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