Observation of plasma toroidal-momentum dissipation by neoclassical toroidal viscosity

被引：178

作者：

Zhu, W ^{[1
]}

Sabbagh, S

Bell, R

Bialek, J

Bell, M

LeBlanc, B

Kaye, S

Levinton, F

Menard, J

Shaing, K

Sontag, A

Yuh, H

机构：

[1] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA

[2] Princeton Univ, Princeton Plasma Phys Lab, Princeton, NJ 08543 USA

[3] Princeton Univ, Nova Photon, Princeton, NJ 08543 USA

[4] Univ Wisconsin, Madison, WI 53706 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.96.225002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Dissipation of plasma toroidal angular momentum is observed in the National Spherical Torus Experiment due to applied nonaxisymmetric magnetic fields and their plasma-induced increase by resonant field amplification and resistive wall mode destabilization. The measured decrease of the plasma toroidal angular momentum profile is compared to calculations of nonresonant drag torque based on the theory of neoclassical toroidal viscosity. Quantitative agreement between experiment and theory is found when the effect of toroidally trapped particles is included.

引用

页数：4

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