Observation of spontaneous toroidal rotation inversion in ohmically heated Tokamak plasmas

被引：140

作者：

Bortolon, A. ^{[1
]}

Duval, B. P. ^{[1
]}

Pochelon, A. ^{[1
]}

Scarabosio, A. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, CRPP, Assoc Euratom Confederat Suisse, CH-1015 Lausanne, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.97.235003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Bulk plasma toroidal rotation is observed to invert spontaneously from counter to cocurrent direction in TCV (Tokamak a Configuration Variable) Ohmically heated discharges, in low confinement mode, without momentum input. The inversion occurs in high current discharges, when the plasma electron density exceeds a well-defined threshold. The transition between the two rotational regimes has been studied by means of density ramps. The results provide evidence of a change of the balance of nondiffusive momentum fluxes in the core of a plasma without an external drive.

引用

页数：4

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