E x B velocity shear and intermittent structures in RFX

被引：0

作者：

Martines, E ^{[1
]}

Spolaore, M ^{[1
]}

Antoni, V ^{[1
]}

Regnoli, G ^{[1
]}

Vianello, N ^{[1
]}

Cavazzana, R ^{[1
]}

Serianni, G ^{[1
]}

Tramontin, L ^{[1
]}

机构：

[1] Assoc Euratom ENEA Fus, Consorzio RFX, Padua, Italy

来源：

CZECHOSLOVAK JOURNAL OF PHYSICS | 2001年 / 51卷 / 10期

关键词：

D O I：

10.1023/A:1012881714423

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Electrostatic turbulence in the edge region of the RFX device has been shown to be intermittent, i.e. not self-similar. In fact the probability distribution function of fluctuations at large scales is Gaussian in shape, whereas it displays strong tails for small scale fluctuations. The events responsible for these heavy tails are associated with turbulent structures with well defined density and floating potential spatial profiles, which have been characterised using arrays of probes. These structures tend to occur preferentially in correspondence to large scale magnetic relaxation events driven by core-resonant tearing modes. They also display an inclination related to the average velocity shear.

引用

页码：983 / 993

页数：11

共 50 条

[31] Impact of E x B shear flow on low-n MHD instabilities
Chen, J. G.
Xu, X. Q.
Ma, C. H.
Xi, P. W.
Kong, D. F.
Lei, Y. A.
PHYSICS OF PLASMAS, 2017, 24 (05)
[32] E x B shear suppression of turbulence in diverted H-mode plasmas: role of edge magnetic shear
Hahm, T. S.
Na, D. H.
Lee, J. W.
Park, J. W.
Na, Y. S.
Kim, S. S.
Ko, W. H.
Diamond, P. H.
Jhang, Hogun
Jeon, Y. M.
NUCLEAR FUSION, 2013, 53 (09)
[33] Study on mantle shear wave velocity structures in North China
Zhang Xue-Min
Diao Gui-Ling
Zhao Ying-Ping
Wang Wei-Min
Shu Pei-Yi
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2006, 49 (06): : 1709 - 1719
[34] Turbulence regulation with radial wavenumber spectral shift caused by externally driven E x B velocity shear during edge-localized mode mitigation
Xiao, G. L.
Zou, X. L.
Zhong, W. L.
Song, S. D.
Duan, X. R.
Liu, A. D.
Bai, X. Y.
Cheng, J.
Cui, Z. Y.
Delpech, L.
Ding, X. T.
Dong, J. Q.
Ekedahl, A.
Feng, B. B.
Giruzzi, G.
Gao, J. M.
Goniche, M.
Hoang, G. T.
Ji, X. Q.
Jiang, M.
Lu, B.
Mazon, D.
Peysson, Y.
Song, X. M.
Shi, Z. B.
Xu, M.
Yang, Z. C.
Yu, D. L.
Zhang, B. Y.
Zhang, Y. P.
Zhou, Y.
NUCLEAR FUSION, 2019, 59 (12)
[35] Optimal Control of the Plasma Azimuthal Velocity Profile by Feedback E x B Actuation in HELCAT
Ilhan, Zeki Okan
Huxley-Cohen, David
Wang, Hexiang
Schuster, Eugenio
Gilmore, Mark
Ware, Andrew
IEEE TRANSACTIONS ON PLASMA SCIENCE, 2014, 42 (03) : 469 - 476
[36] Strong E x B flow shear and reduced fluctuations in a reversed-field pinch
Chapman, BE
Chiang, CS
Prager, SC
Sarff, JS
Stoneking, MR
PHYSICAL REVIEW LETTERS, 1998, 80 (10) : 2137 - 2140
[37] Anomalous parallel momentum transport due to E x B flow shear in a tokamak plasma
Casson, F. J.
Peeters, A. G.
Camenen, Y.
Hornsby, W. A.
Snodin, A. P.
Strintzi, D.
Szepesi, G.
PHYSICS OF PLASMAS, 2009, 16 (09)
[38] Impact of E x B flow shear stabilization on particle confinement and density peaking at JET
Buangam, W.
Garcia, J.
Onjun, T.
PLASMA SCIENCE & TECHNOLOGY, 2020, 22 (06)
[39] Enhanced particle confinement and turbulence reduction due to E x B shear in the TEXTOR tokamak
Boedo, J
Gray, D
Jachmich, S
Conn, R
Terry, GP
Tynan, G
Van Oost, G
Weynants, RR
NUCLEAR FUSION, 2000, 40 (07) : 1397 - 1410
[40] Interaction between mean and fluctuating E x B shear flows on the ISTTOK edge plasma
Silva, C.
Duarte, P.
Fernandes, H.
Figueiredo, H.
PLASMA PHYSICS AND CONTROLLED FUSION, 2012, 54 (08)

← 1 2 3 4 5 →