Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Gao, Qingdi"'
Publikováno v:
Chinese Physics Letters. 25:628-631
A sawtooth-free period is produced following the pellet injection in the pellet fuelled discharge of qa = 3.4 (where qa is the safety factor at the plasma boundary) in the HL-2A tokamak. Establishment of the current profile such as in the hybrid scen
Publikováno v:
Chinese Physics. 16:3464-3469
The effects of trapped electrons on off-axis lower hybrid current drive (LHCD) in tokamaks are studied, A computer code for solving the Fokker–Planck equation in a toroidal geometry is developed and employed. The code is suitable for various auxili
Publikováno v:
Plasma Science and Technology. 9:19-22
Using the Grad-Shafranov equation, the magnetic configuration is obtained. With this configuration, Brambilla's ray tracing theory has been used to study the propagation of LH waves. The qualitative study of the feasibility of LHCD in the non-circula
Autor:
Huang Yuan, Liu Yong, Gao Qingdi, Yan Longwen, Xiao Zhenggui, Liu Zetian, Cao Zeng, Long Yong-Xing, Ding Xuan-Tong, Zhu Genliang, Liu Yi, Pan Yudong, Yang Qingwei, Xiao Wei-Wen, Ji Xiao-Quan, Cui Zheng-Ying, Shi Zhongbing, Zhou Yan, Liu Dequan
Publikováno v:
Chinese Physics Letters. 23:2502-2505
Enhanced confinement has been achieved by the centre fuelling of pellet injection on the HL-2A tokamak. The energy confinement time increases from 50 ms to 140 ms after the pellet injection. Experimental results show that the improvement of the confi
Publikováno v:
Plasma Science and Technology. 7:2901-2904
The main topics concerning lower hybrid wave heating (LHH) and lower hybrid current drive (LHCD) in tokamak systems are presented. The inherent properties of tokamak systems give the `gap' filling on Brambilla's spectrum, which are conducive to LHCD,
Autor:
Gao Qingdi, Long Yong-Xing
Publikováno v:
Chinese Physics Letters. 21:1582-1585
The stochastic ripple diffusion is investigated in a realistic reversed magnetic shear discharge. Rippled field produces variations in the velocity of trapped particles leading to excursion of the tip position for successive banana bounces. When the
Publikováno v:
Chinese Physics Letters. 12:747-750
The resistivity-gradient-driven turbulence is investigated in the presence of both poloidal and parallel/toroidal flows. At saturation, the poloidal flow shear reduces fluctuations at the edge of plasmas, the parallel flow and its shear both reduce f
Autor:
Chen Xiaoping, Gao Qingdi
Publikováno v:
Chinese Physics Letters. 12:167-170
Multifaceted asymmetric radiation from the edges (MARFEs) are studied on the basis of radiative condensation instability. The role of medium-Z impurity radiation and its association with the soft density limit are examined. A rigid poloidal rotation
Publikováno v:
Chinese Physics Letters. 18:790-792
For a reversed magnetic shear plasma formed by early neutral beam injection into the HL-2A tokamak, magnetohydrodynamics instability analysis against ideal low-n modes and resistive interchange modes is carried out. Low-n modes located in the low she
Publikováno v:
Acta Physica Sinica. 54:180
A Fokker-Planck study is carried out for tokamak lower hybrid current drive (LHCD)by considering the wave absorption in the presence of trapping effect situation. This Fokker-Planck code is developed based on FASTFP, and is suitable for various auxil