Basic features of the multiscale interaction between tearing modes and slab ion-temperature-gradient modes

被引：12

作者：

Wei, L. ^{[1
]}

Wang, Z. X. ^{[1
]}

Li, J. Q. ^{[2
]}

Hu, Z. Q. ^{[1
]}

Kishimoto, Y. ^{[3
]}

机构：

[1] Dalian Univ Technol, Sch Phys, Minist Educ, Key Lab Mat Modificat Laser Ion & Electron Beams, Dalian 116024, Peoples R China

[2] Southwestern Inst Phys, Chengdu 610041, Peoples R China

[3] Kyoto Univ, Grad Sch Energy Sci, Uji, Kyoto 6110011, Japan

来源：

CHINESE PHYSICS B | 2019年 / 28卷 / 12期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

magnetic reconnection; tearing modes; magnetohydrodynamics; drift waves; nonlinear phenomena; ZONAL FLOWS; TRANSPORT; TURBULENCE; PLASMA; SHEAR; INSTABILITIES; CONFINEMENT;

D O I：

10.1088/1674-1056/ab5437

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Nonlinear interaction between tearing modes (TM) and slab ion-temperature-gradient (ITG) modes is numerically investigated by using a Landau fluid model. It is observed that the energy spectra with respect to wavenumbers become broader during the transition phase from the ITG-dominated stage to TM-dominated stage. Accompanied with the fast growth of the magnetic island, the frequency of TM/ITG with long/short wavelength fluctuations in the electron/ion diamagnetic direction decreases/increases respectively. The decrease of TM frequency is identified to result from the effect of the profile flattening in the vicinity of the magnetic island, while the increase of the frequencies of ITG fluctuations is due to the eigenmode transition of ITG induced by the large scale zonal flow and zonal current related to TM. Roles of zonal current induced by the ITG fluctuations in the instability of TM are also analyzed. Finally, the electromagnetic transport features in the vicinity of the magnetic island are discussed.

引用

页数：11

共 73 条

[1] A signature for turbulence driven magnetic islands [J].

Agullo, O. ;

Muraglia, M. ;

Poye, A. ;

Benkadda, S. ;

Yagi, M. ;

Garbet, X. ;

Sen, A. .

PHYSICS OF PLASMAS, 2014, 21 (09)

[2] Modulation of Core Turbulent Density Fluctuations by Large-Scale Neoclassical Tearing Mode Islands in the DIII-D Tokamak [J].

Bardoczi, L. ;

Rhodes, T. L. ;

Carter, T. A. ;

Banon Navarro, A. ;

Peebles, W. A. ;

Jenko, F. ;

McKee, G. .

PHYSICAL REVIEW LETTERS, 2016, 116 (21)

[3] Bursty transport in tokamak turbulence: Role of zonal flows and internal transport barriers [J].

Benkadda, S ;

Beyer, P ;

Bian, N ;

Figarella, C ;

Garcia, O ;

Garbet, X ;

Ghendrih, P ;

Sarazin, Y ;

Diamond, PH .

NUCLEAR FUSION, 2001, 41 (08) :995-1001

[4] Dynamics of Low-Intermediate-High-Confinement Transitions in Toroidal Plasmas [J].

Cheng, J. ;

Dong, J. Q. ;

Itoh, K. ;

Yan, L. W. ;

Xu, M. ;

Zhao, K. J. ;

Hong, W. Y. ;

Huang, Z. H. ;

Ji, X. Q. ;

Zhong, W. L. ;

Yu, D. L. ;

Itoh, S. -I. ;

Nie, L. ;

Kong, D. F. ;

Lan, T. ;

Liu, A. D. ;

Zou, X. L. ;

Yang, Q. W. ;

Ding, X. T. ;

Duan, X. R. ;

Liu, Yong .

PHYSICAL REVIEW LETTERS, 2013, 110 (26)

[5] Zonal flows in plasma - a review [J].

Diamond, PH ;

Itoh, SI ;

Itoh, K ;

Hahm, TS .

PLASMA PHYSICS AND CONTROLLED FUSION, 2005, 47 (05) :R35-R161

[6] Comparisons and physics basis of tokamak transport models and turbulence simulations [J].

Dimits, AM ;

Bateman, G ;

Beer, MA ;

Cohen, BI ;

Dorland, W ;

Hammett, GW ;

Kim, C ;

Kinsey, JE ;

Kotschenreuther, M ;

Kritz, AH ;

Lao, LL ;

Mandrekas, J ;

Nevins, WM ;

Parker, SE ;

Redd, AJ ;

Shumaker, DE ;

Sydora, R ;

Weiland, J .

PHYSICS OF PLASMAS, 2000, 7 (03) :969-983

[7] Study of internal transport barrier triggering mechanism in tokamak plasmas [J].

Dong, JQ ;

Mou, ZZ ;

Long, YX ;

Mahajan, SM .

PHYSICS OF PLASMAS, 2004, 11 (12) :5673-5679

[8] Chapter 2: Plasma confinement and transport [J].

Department of Electrical Engineering, PSTI, University of California, Los Angeles, CA, United States ;

不详 ;

不详 .

Nucl Fusion, 2007, 6 (S18-S127) :S18-S127

[9] Identification of zonal flows in a toroidal plasma [J].

Fujisawa, A ;

Itoh, K ;

Iguchi, H ;

Matsuoka, K ;

Okamura, S ;

Shimizu, A ;

Minami, T ;

Yoshimura, Y ;

Nagaoka, K ;

Takahashi, C ;

Kojima, M ;

Nakano, H ;

Ohsima, S ;

Nishimura, S ;

Isobe, M ;

Suzuki, C ;

Akiyama, T ;

Ida, K ;

Toi, K ;

Itoh, SI ;

Diamond, PH .

PHYSICAL REVIEW LETTERS, 2004, 93 (16) :165002-1

[10] Electromagnetic ion temperature gradient modes of tearing mode parity in high β sheared slab plasmas [J].

Gao, Z ;

Dong, JQ ;

Liu, GJ ;

Ying, CT .

PHYSICS OF PLASMAS, 2002, 9 (05) :1692-1697

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