Open AccessIMPROVEMENT OF CONFINEMENT BY LOWER HYBRID WAVES
Author(s) -
Li Jian-Gang Luo,
Jiarong,
Baonian Wan,
Yuexiu Liu,
Xianzu Gong,
Duochuan Li,
Jie Ye,
Li Zhi-Xiu,
Xu Xiang-Dong
Publication year - 2000
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.49.2414
Subject(s) - plasma , tokamak , lower hybrid oscillation , diffusion , atomic physics , toroid , materials science , plasma confinement , magnetic confinement fusion , physics , shear (geology) , phase (matter) , molecular physics , nuclear physics , thermodynamics , quantum mechanics , composite material
Quasi-steady-state H-mode has been achieved by combination of two lower hybrid w aves in HT-6M tokamak.Plasma energy confinement time increases by two times,and the particle confinement time increases by a factor of three under a high plasma density condition.The wave diffusion and current radial diffusion code is used to simulate the experimental data on HT-6M.The calculated results show that the off-axis power deposition of lower hybrid wave is formed due to the low toroidal magnetic field and high plasma density.Reversed sheared(RS) configuration of th e plasma current density is formed during H-mode phase.The RS configuration and internal transport barrier are attributed to the enhanced confinement improvemen t.The experimental data also gives the evidence for the reversed shear formation .