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：

Particle beams - Plasma confinement - Trapped ions - Plasma diagnostics;

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 27 条

[1] Resistive interchange modes in negative central shear tokamaks with peaked pressure profiles [J].

Chu, MS ;

Greene, JM ;

Lao, LL ;

Miller, RL ;

Bondeson, A ;

Sauter, O ;

Rice, BW ;

Strait, EJ ;

Taylor, TS ;

Turnbull, AD .

PHYSICAL REVIEW LETTERS, 1996, 77 (13) :2710-2713

[2] Local pellet based and line-integrated nonperturbing charge exchange measurements with a compact neutral particle analyzer on Large Helical Device [J].

Goncharov, P. R. ;

Ozaki, T. ;

Sudo, S. ;

Tamura, N. ;

Veshchev, E. A. ;

Sergeev, V. Yu. ;

Krasilnikov, A. V. .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2006, 77 (10)

[3] Energetic particle physics in fusion research in preparation for burning plasma experiments [J].

Gorelenkov, N. N. ;

Pinches, S. D. ;

Toi, K. .

NUCLEAR FUSION, 2014, 54 (12)

[4] MHD phenomena in advanced scenarios on ASDEX Upgrade and the influence of localized electron heating and current drive [J].

Günter, S ;

Gude, A ;

Hobirk, J ;

Maraschek, M ;

Saarelma, S ;

Schade, S ;

Wolf, RC .

NUCLEAR FUSION, 2001, 41 (09) :1283-1290

[5] Characterization of off-axis fishbones [J].

Heidbrink, W. W. ;

Austin, M. E. ;

Fisher, R. K. ;

Garcia-Munoz, M. ;

Matsunaga, G. ;

McKee, G. R. ;

Moyer, R. A. ;

Muscatello, C. M. ;

Okabayashi, M. ;

Pace, D. C. ;

Shinohara, K. ;

Solomon, W. M. ;

Strait, E. J. ;

Van Zeeland, M. A. ;

Zhu, Y. B. .

PLASMA PHYSICS AND CONTROLLED FUSION, 2011, 53 (08)

[6] Nonlinear MHD analysis for LHD plasmas [J].

Ichiguchi, K ;

Nakajima, N ;

Wakatani, M ;

Carreras, BA ;

Lynch, VE .

NUCLEAR FUSION, 2003, 43 (10) :1101-1109

[7] 6 MeV heavy ion beam probe on the Large Helical Device [J].

Ido, T. ;

Shimizu, A. ;

Nishiura, M. ;

Nishizawa, A. ;

Katoh, S. ;

Tsukada, K. ;

Yokota, M. ;

Ogawa, H. ;

Inoue, T. ;

Hamada, Y. ;

Crowley, T. P. .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2006, 77 (10)

[8] Escaping fast ion diagnostics in compact helical system heliotron/torsatron [J].

Isobe, M ;

Darrow, DS ;

Kondo, T ;

Sasao, M ;

Toi, K ;

Osakabe, M ;

Shimizu, H ;

Yoshimura, Y ;

Takahashi, C ;

Murakami, S ;

Okamura, S ;

Matsuoka, K .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1999, 70 (01) :827-830

[9]

Itoh K., 1999, PLAS PHYS S

[10] Observation and analysis of a resistive mode with interchange parity in negative central shear plasmas in the DIII-D Tokamak [J].

Jayakumar, R ;

Luce, TC ;

Taylor, TS ;

Turnbull, AD ;

Wade, MR ;

Austin, ME ;

Casper, TA ;

Makowski, MA ;

Chu, MS ;

Lao, LL ;

Strait, EJ ;

Brennan, DP .

PHYSICS OF PLASMAS, 2002, 9 (12) :5043-5049

← 1 2 3 →