Experimental observation of the non-diffusive avalanche-like electron heat transport events and their dynamical interaction with the shear flow structure

被引：27

作者：

Choi, Minjun J. ^{[1
]}

Jhang, Hogun ^{[1
]}

Kwon, Jae-Min ^{[1
]}

Chung, Jinil ^{[1
]}

Woo, Minho ^{[1
]}

Qi, Lei ^{[1
]}

Ko, Sehoon ^{[1
]}

Hahm, Taik-Soo ^{[2
]}

Park, Hyeon K. ^{[3
]}

Kim, Hyun-Seok ^{[1
]}

Kang, Jisung ^{[1
]}

Lee, Jaehyun ^{[1
]}

Kim, Minwoo ^{[1
]}

Yun, Gunsu S. ^{[4
]}

机构：

[1] Natl Fus Res Inst, Daejeon 34133, South Korea

[2] Seoul Natl Univ, Seoul 08826, South Korea

[3] Ulsan Natl Inst Sci & Technol, Ulsan 44919, South Korea

[4] Pohang Univ Sci & Technol, Pohang 37673, Gyungbuk, South Korea

来源：

NUCLEAR FUSION | 2019年 / 59卷 / 08期

关键词：

electron heat transport; avalanche; mesoscale shear flow structure; self-organized criticality; SELF-ORGANIZED CRITICALITY; ZONAL FLOWS; TURBULENCE; PLASMA; PROGRESS; MODEL;

D O I：

10.1088/1741-4326/ab247d

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：

We present experimental observations suggesting that non-diffusive avalanche-like transport events are a prevalent and universal process in the electron heat transport of tokamak plasmas. They are observed in the low confinement mode and the weak internal transport barrier plasmas in the absence of magnetohydrodynamic instabilities. In addition, the electron temperature profile corrugation, which indicates the existence of the E x B shear flow layers, is clearly demonstrated as well as their dynamical interaction with the avalanche-like events. The measured width of the profile corrugation is around 45(rho i), implying the mesoscale nature of the structure.

引用

页数：8

共 3 条

[1] Study of the interaction between diffusive and avalanche-like transport in near-critical dissipative-trapped-electron-mode turbulence
Mier, J. A.
Garcia, L.
Sanchez, R.
PHYSICS OF PLASMAS, 2006, 13 (10)
[2] Direct observation of the non-locality of non-diffusive counter-gradient electron thermal transport during the formation of hollow electron-temperature profiles in the Large Helical Device
Tsujimura, T. I.
Kobayashi, T.
Tanaka, K.
Ida, K.
Nagaoka, K.
Yoshinuma, M.
Yamada, I.
Funaba, H.
Seki, R.
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Kinoshita, T.
Tokuzawa, T.
Kenmochi, N.
Igami, H.
Mukai, K.
Goto, M.
Kawamoto, Y.
PHYSICS OF PLASMAS, 2022, 29 (03)
[3] Avalanche electron heat transport events triggered by non-linear mode couplings in HL-2A neutral beam injection heated L-mode plasmas
Chen, W.
Shi, Z. B.
Qiu, Z. Y.
Yu, L. M.
Shi, P. W.
Jiang, M.
Ji, X. Q.
Li, Y. G.
He, X. X.
Fang, K. R.
Zou, Y. P.
Ma, R. R.
Zhu, X. L.
Zhong, W. L.
Ding, X. T.
Yang, Q. W.
Wang, Z. X.
Li, J. Q.
Xu, M.
Duan, X. R.
NUCLEAR FUSION, 2020, 60 (09)

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