Abstract Based on the principle of profile consistency and $\eta$i-mode induced anomalous transport model, the enery confinement in tokamak plasmas is studied with inclusion of the bootstrap curreut in which the poloidal magnetic field is consistently deter-mined. The results show that bootstrap current has a significant effect on plasma confinement. If the bootstrap current is (15-30)% of the total current, global energy confinement time may increase by (20-45)%, and the maximum of related energy store is almost as much as twice the value without bootstrap current. Variation of the energy confinement time with the plasma parameters is of similar trend with Kaye-Goldston scaling. In addition, it can be seen that the radius of q=l surface decreases with bootstrap current, which may be one of the possible mechanisms for some experimental results where sawtooth oscillation disappears because of auxiliary heating.
Received: 19 November 1992
Accepted manuscript online:
Radiative divertor behavior and physics in Ar seeded plasma on EAST Jingbo Chen(陈竞博), Yanmin Duan(段艳敏), Zhongshi Yang(杨钟时), Liang Wang(王亮), Kai Wu(吴凯), Kedong Li(李克栋), Fang Ding(丁芳), Hongmin Mao(毛红敏), Jichan Xu(许吉禅), Wei Gao(高伟), Ling Zhang(张凌), Jinhua Wu(吴金华), Guang-Nan Luo(罗广南), EAST Team. Chin. Phys. B, 2017, 26(9): 095205.
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