ηi-mode in toroidal plasmas with anisotropic ion temperature and its gradient

被引：6
|
作者：
Jia, M. X. [1 ]
Li, J. C. [1 ]
Liu, S. F. [1 ]
Kong, W. [2 ]
Zhu, K. E. [1 ]
Dong, J. Q. [3 ]
机构：
[1] Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China
[2] Civil Aviat Univ China, Coll Sci, Tianjin 300300, Peoples R China
[3] Southwestern Inst Phys, Chengdu 610041, Peoples R China
来源：
NUCLEAR FUSION | 2021年 / 61卷 / 04期
基金：
国家重点研发计划;
关键词：
gyro-kinetic equation; ITG mode; ion temperature and temperature gradient anisotropy; MODES; INSTABILITY;
D O I：
10.1088/1741-4326/abe6b5
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The gyrokinetic integral eigenmode equation is applied to study ion-temperature-gradient (ITG) mode in toroidal plasmas with magnetic shear, where the ion temperature and its gradient are anisotropic. The numerical studies demonstrate that instability of ITG mode is reduced by an ion temperature anisotropy of higher perpendicular temperature T-i perpendicular to or high enough parallel temperature T-i parallel to, in which Landau damping plays an important role. The temperature gradient in the perpendicular (parallel) direction is stronger to drive ITG mode for large T-i perpendicular to (T-i parallel to). These effects are directly related to the temperature gradient threshold for excitation of ITG mode. In addition, the synergy effect of magnetic shear and anisotropy of ion temperature and its gradient is studied in detail, where the combination of magnetic shear and large parallel temperature has the most obvious inhibitory effect on ITG mode.
引用
收藏
页数：7
相关论文
共 50 条
  • [1] STUDIES OF IMPURITY MODE AND ION TEMPERATURE-GRADIENT MODE IN TOROIDAL PLASMAS
    DONG, JQ
    HORTON, W
    PHYSICS OF PLASMAS, 1995, 2 (09) : 3412 - 3419
  • [2] Enhanced Ion Temperature Gradient mode stability with reverse sheer in toroidal plasmas
    Jhowry, B
    THEORY OF FUSION PLASMAS, 2000, : 469 - 474
  • [3] Enhanced ion temperature gradient mode stability with reverse shear in toroidal plasmas
    Jhowry, B
    PLASMA PHYSICS AND CONTROLLED FUSION, 2000, 42 (12) : 1259 - 1267
  • [4] Toroidal kinetic ηi-mode study in reversed-field pinch plasmas
    Liu, Songfen
    Guo, S. C.
    Dong, J. Q.
    PHYSICS OF PLASMAS, 2010, 17 (05)
  • [5] Threshold for the destabilisation of the ion-temperature-gradient mode in magnetically confined toroidal plasmas
    Zocco, A.
    Xanthopoulos, P.
    Doerk, H.
    Connor, J. W.
    Helander, P.
    JOURNAL OF PLASMA PHYSICS, 2018, 84 (01)
  • [6] ION-TEMPERATURE-GRADIENT INSTABILITY IN TOROIDAL PLASMAS
    GUZDAR, PN
    CHEN, L
    TANG, WM
    RUTHERFORD, PH
    PHYSICS OF FLUIDS, 1983, 26 (03) : 673 - 677
  • [7] Short wavelength ion temperature gradient instability in toroidal plasmas
    Gao, Z
    Sanuki, H
    Itoh, K
    Dong, JQ
    PHYSICS OF PLASMAS, 2005, 12 (02)
  • [8] Instability Driven by Anisotropy Ion Temperature Gradient in Toroidal Plasmas
    DONG Jiaqi
    中国核科技报告, 2002, (00) : 960 - 964
  • [9] Electron temperature fluctuations associated with the weakly coherent mode in the edge of I-mode plasmas
    White, A. E.
    Phillips, P.
    Whyte, D. G.
    Hubbard, A. E.
    Sung, C.
    Hughes, J. W.
    Dominguez, A.
    Terry, J.
    Cziegler, I.
    NUCLEAR FUSION, 2011, 51 (11)
  • [10] On finite β stabilization of the toroidal ion temperature gradient mode
    Hirose, A
    PHYSICS OF PLASMAS, 2000, 7 (02) : 433 - 436
12345