Comparison of transient electron heat transport in LHD helical and JT-60U tokamak plasmas

被引:56
作者
Inagaki, S
Takenaga, H
Ida, K
Isayama, A
Tamura, N
Takizuka, T
Shimozuma, T
Kamada, Y
Kubo, S
Miura, Y
Nagayama, Y
Kawahata, K
Sudo, S
Ohkubo, K
机构
[1] Natl Inst Fus Sci, Gifu 5095292, Japan
[2] Japan Atom Energy Res Inst, Naka Fus Res Estab, Naka, Ibaraki 3110193, Japan
关键词
D O I
10.1088/0029-5515/46/1/015
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Transient transport experiments are performed in plasmas with and without internal transport barriers (ITB) on LED and JT-60U. The dependence of chi e on the electron temperature, T-e, and on the electron temperature gradient, del T-e, is analysed with an empirical non-linear heat transport model. In plasmas without an ITB, two different types of non-linearity of the electron heat transport are observed from cold/heat pulse propagation: the X, depends on Te and del T-e in JT-60U, while the del T-e dependence is weak in LHD. Inside the ITB region, there is none or weak del T-e dependence both in LHD and JT-60U. Growth of the cold pulse driven by the negative T, dependence of X, is observed inside the ITB region (LHD) and near the boundary of the ITB region (JT-60U).
引用
收藏
页码:133 / 141
页数:9
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