Abstract Electron temperature gradient driven instability in toroidal plasmas with negative magnetic shear is studied. Full electron kinetics is considered, and the behaviours of the modes and corresponding turbulent transport in the parameter regimes close to the instability threshold are emphasized. Growing and damped modes are both investigated. The singular points of the integrand are disposed of, and the fitting formulae for the critical gradient are given. The theoretical results are shown to be close to the experimental observations.
Received: 23 September 2003
Revised: 06 February 2004
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10135020).
Cite this article:
Jian Guang-De (简广德), Dong Jia-Qi (董家齐) Study of electron temperature gradient instability in toroidal plasmas with negative magnetic shear 2004 Chinese Physics 13 898
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