文献类型：期刊文献

英文题名：High bootstrap current fraction during the synergy of LHCD and IBW on the HT-7 Tokamak

作者：Zhang, XM; Wan, BN; Wu, ZW

机构：[1]E China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China

年份：2005

卷号：22

期号：6

起止页码：1468

外文期刊名：CHINESE PHYSICS LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000229738700047)】；

语种：英文

摘要：More than 70% of the total plasma current is sustained by the bootstrap current and current drive during the synergy of lower hybrid current driving (LHCD) and ion Berstein wave (IBW) heating on the HT-7 tokamak. The lower hybrid non-inductive current source is off-axis and well localized, and more than 35% bootstrap current plasma has been obtained. The IBW in controlling electron pressure profile can be integrated into the LHCD target plasma. The largest steep gradient of the electron pressure profile in the region rho similar to 0.5-0.7 mostly comes from the electron temperature profile, which may induce the large fraction bootstrap current. The large off-axis bootstrap current can help to create negative magnetic shear, and the good plasma confinement is achieved.