FusionPapers
図版検索トレンドwiki日本の研究
© 2026 FUSIONPAPERS
About法務情報
トップに戻る

Spatial structures and interaction of multiple sheared flow populations in tokamak edge turbulence

K.J. Zhao, J.Q. Dong, L.W. Yan, P.H. Diamond, J. Cheng, W.Y. Hong, Z.H. Huang, M. Xu, G.R. Tynan, K. Itoh2013年被引用 6Nuclear FusionIF 3出版社

The radial structures of multiple sheared flow populations and fluctuations are simultaneously measured using combinations of Langmuir probe arrays in the edge plasmas of the HL-2A tokamak with ohmic and electron cyclotron resonance heating (ECRH). The maximum of geodesic acoustic mode (GAM) amplitude locates at ∼2–3 cm inside the last close flux surface (LCFS). The low-frequency zonal flow (LFZF) and GAM tend to coexist in the inner region. The dependences of the amplitudes of the multiple sheared flows and turbulence on ECRH heating power are also investigated. The measured turbulent Reynolds stresses are shown to be strongly correlated with the sheared flows, as predicted by theory. The turbulence is modulated at the each frequency of the multiple sheared flows simultaneously, and the particle fluxes induced by the turbulence are significantly reduced near the LCFS and in the GAM peaking region. The analyses also show that the spatial structures of the turbulent envelopes at the LFZF and GAM frequencies are similar to those observed in LFZF and GAM.

日本語訳

HL-2Aトカマクの周辺プラズマにおいて、オーミック加熱および電子サイクロトロン共鳴加熱(ECRH)を伴う条件下で、ラングミュアプローブアレイの組み合わせを用いて、複数のせん断流集団と変動の径方向構造が同時に測定される。測地線音響モード(GAM)振幅の最大値は、最終閉鎖磁気面(LCFS)の内側約2〜3 cmに位置する。低周波帯状流(LFZF)とGAMは内側領域で共存する傾向がある。複数のせん断流と乱流の振幅のECRH加熱出力への依存性も調査される。測定された乱流レイノルズ応力は、理論が予測するように、せん断流と強く相関することが示される。乱流は複数のせん断流の各周波数で同時に変調され、乱流によって誘起される粒子フラックスは、LCFS近傍およびGAMピーキング領域で著しく減少する。解析はまた、LFZFおよびGAM周波数における乱流包絡線の空間構造が、LFZFおよびGAMで観測されたものと類似していることを示す。

wiki

Edge turbulence
この論文にはまだAI要約がありません。

関連論文

Reduction of turbulence by enhanced low-frequency zonal flow-like structures in HL-2A edge plasmas

2024Nuclear Fusion

Turbulence and zonal flows in edge plasmas of the HL-2A tokamak

2010Plasma Physics and Controlled Fusion

Observation and characterization of radially sheared zonal flows in DIII-D

2003Plasma Physics and Controlled Fusion

Generation of large-scale coherent structures by turbulence in the edge plasmas of the HL-2A tokamak

2013Nuclear Fusion

Frequency scaling and localization of geodesic acoustic modes in ASDEX Upgrade

2008Plasma Physics and Controlled Fusion

Evolutions of zonal flows and turbulence in a tokamak edge plasma during electron cyclotron resonance heating

2013Nuclear Fusion

Novel states of pre-transition edge turbulence emerging from shearing mode competition

2011Nuclear Fusion

The first observation of GAM induced by negative biasing in J-TEXT tokamak

2024Plasma Physics and Controlled Fusion

Edge shear flows and particle transport near the density limit of the HL-2A tokamak

2018Nuclear Fusion

Zonal flow dynamics, modulation of mean-flow-driven fluctuations, and particle flux control in a linear magnetized plasma

2026Nuclear Fusion