文献类型：期刊文献

英文题名：Electron internal transport barrier sustained with IBW and LHCD on the HT-7 tokamak

作者：Zhang, X.M.[1,2]; Zhang, J.W.[1]; Wan, B.N.[2]; Wu, Z.W.[2]

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：2007

卷号：361

期号：4-5

起止页码：373

外文期刊名：PHYSICS LETTERS A

收录：;EI(收录号：20202208739971);WOS:【SCI-EXPANDED(收录号:WOS:000244767900019)】；

语种：英文

外文关键词：electron transport barrier; bootstrap current; IBW and LHCD plasma

摘要：Electron internal transport barrier is formed and sustained for about 3 s during the synergy of lower hybrid wave current drive (LHCD) and ion Bernstein wave (IBW) on the HT-7 tokamak. And the magnetic shear, s, is also negative within the region of rho similar to 0.58. The total non-inductive current fraction is up to 70% and the bootstrap current fraction gets to about 37% during the steady state in these discharges. The peak in the bootstrap current is well aligned with the barrier location. The local reduction of transport results in an overall improvement of the energy confinement time. Confinement enhancement factor H-89 is about 1.5. (c) 2006 Elsevier B.V. All rights reserved.