Resistive Interchange Modes Destabilized by Helically Trapped Energetic Ions in a Helical Plasma

被引：45

作者：

Du, X. D. ^{[1
]}

Toi, K. ^{[2
]}

Osakabe, M. ^{[1
,2
]}

Ohdachi, S. ^{[1
,2
]}

Ido, T. ^{[2
]}

Tanaka, K. ^{[2
]}

Yokoyama, M. ^{[1
,2
]}

Yoshinuma, M. ^{[1
,2
]}

Ogawa, K. ^{[2
]}

Watanabe, K. Y. ^{[2
]}

Isobe, M. ^{[1
,2
]}

Nagaoka, K. ^{[1
,2
]}

Ozaki, T. ^{[2
]}

Sakakibara, S. ^{[1
,2
]}

Seki, R. ^{[2
]}

Shimizu, A. ^{[2
]}

Suzuki, Y. ^{[1
,2
]}

Tsuchiya, H. ^{[2
]}

机构：

[1] Grad Univ Adv Study, Dept Fus Sci, Toki, Gifu 5095292, Japan

[2] Natl Inst Nat Sci, Natl Inst Fus Sci, Toki, Gifu 5095292, Japan

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 114卷 / 15期

基金：

日本学术振兴会;

关键词：

Frequency chirping - Interchange mode - Neutral beam injection - Peripheral regions - Radial electric field - Resonant interaction - Toroidal mode numbers - Toroidal plasmas;

D O I：

10.1103/PhysRevLett.114.155003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new bursting m = 1/n = 1 instability (m; n: poloidal and toroidal mode numbers) with rapid frequency chirping down has been observed for the first time in a helical plasma with intense perpendicular neutral beam injection. This is destabilized in the plasma peripheral region by resonant interaction between helically trapped energetic ions and the resistive interchange mode. A large radial electric field is induced near the edge due to enhanced radial transport of the trapped energetic ions by the mode, and leads to clear change in toroidal plasma flow, suppression of microturbulence, and triggering an improvement of bulk plasma confinement.

引用

页数：5

共 39 条

[21] Energy and pitch angle-resolved measurements of escaping helically trapped energetic ions at the small major radius side of the compact helical system
Isobe, M
Darrow, DS
Kotani, J
Shimizu, A
Suzuki, C
Yoshimura, Y
Minami, T
Takahashi, C
Nagaoka, K
Nishimura, S
Toi, K
Matsuoka, K
Okamura, S
REVIEW OF SCIENTIFIC INSTRUMENTS, 2003, 74 (03): : 1739 - 1742
[22] Characteristics of magnetic island formation due to resistive interchange instability in helical plasma
Ueda, R.
Watanabe, K. Y.
Matsumoto, Y.
Itagaki, M.
Sato, M.
Oikawa, S.
PHYSICS OF PLASMAS, 2014, 21 (05)
[23] Kinetic effects of trapped energetic particles on stability of external kink modes with a resistive wall
Hao, G. Z.
Liu, Y. Q.
Wang, A. K.
Qiu, X. M.
PHYSICS OF PLASMAS, 2012, 19 (03)
[24] PLASMA MODES DUE TO IMPURITY AND MAGNETICALLY TRAPPED IONS
COPPI, B
PHYSICAL REVIEW LETTERS, 1973, 31 (24) : 1443 - 1446
[25] LINE TYING OF INTERCHANGE MODES IN A NEARLY COLLISIONLESS MIRROR-TRAPPED PLASMA
VANDEGRIFT, G
PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1989, 1 (12): : 2414 - 2421
[26] STEADY-STATE MAGNETIC DIFFUSION FROM RESISTIVE INTERCHANGE MODES IN A PLASMA
MANHEIMER, WM
BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1980, 25 (08): : 953 - 953
[27] STEADY-STATE MAGNETIC DIFFUSION FROM RESISTIVE INTERCHANGE MODES IN A PLASMA
MANHEIMER, WM
PHYSICAL REVIEW LETTERS, 1980, 45 (15) : 1249 - 1252
[28] Excitation of 2/1 fishbone-like modes by trapped energetic ions
Zhang, Xiaoxi
Gao, Baofeng
Cai, Huishan
Zheng, Shu
Wang, Zheng-Xiong
PLASMA PHYSICS AND CONTROLLED FUSION, 2020, 62 (08)
[29] Effect of precession drift motion of trapped thermal ions on ballooning modes in helical plasmas
Sato, M.
Todo, Y.
NUCLEAR FUSION, 2019, 59 (09)
[30] Toroidal Alfven eigenmode triggered by trapped anisotropic energetic particles in a toroidal resistive plasma with free boundary
Yang, S. X.
Hao, G. Z.
Liu, Y. Q.
Wang, Z. X.
Hu, Y. J.
Zhu, J. X.
He, H. D.
Wang, A. K.
NUCLEAR FUSION, 2018, 58 (04)

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