Observation of plasma toroidal-momentum dissipation by neoclassical toroidal viscosity

W. Zhu; S. A. Sabbagh; R. E. Bell; J. M. Bialek; M. G. Bell; B. P. Leblanc; S. M. Kaye; F. M. Levinton; J. E. Menard; Ker-Chung Shaing; A. C. Sontag; H. Yuh

doi:10.1103/PhysRevLett.96.225002

Observation of plasma toroidal-momentum dissipation by neoclassical toroidal viscosity

W. Zhu, S. A. Sabbagh, R. E. Bell, J. M. Bialek, M. G. Bell, B. P. Leblanc, S. M. Kaye, F. M. Levinton, J. E. Menard, Ker-Chung Shaing, A. C. Sontag, H. Yuh

Institute of Space and Plasma Sciences

Research output: Contribution to journal › Article

172 Citations (Scopus)

Abstract

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.

Original language	English
Article number	225002
Journal	Physical review letters
Volume	96
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.96.225002
Publication status	Published - 2006 Jun 19

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.96.225002

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Zhu, W., Sabbagh, S. A., Bell, R. E., Bialek, J. M., Bell, M. G., Leblanc, B. P., Kaye, S. M., Levinton, F. M., Menard, J. E., Shaing, K-C., Sontag, A. C., & Yuh, H. (2006). Observation of plasma toroidal-momentum dissipation by neoclassical toroidal viscosity. Physical review letters, 96(22), [225002]. https://doi.org/10.1103/PhysRevLett.96.225002

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abstract = "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.",

author = "W. Zhu and Sabbagh, {S. A.} and Bell, {R. E.} and Bialek, {J. M.} and Bell, {M. G.} and Leblanc, {B. P.} and Kaye, {S. M.} and Levinton, {F. M.} and Menard, {J. E.} and Ker-Chung Shaing and Sontag, {A. C.} and H. Yuh",

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doi = "10.1103/PhysRevLett.96.225002",

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Observation of plasma toroidal-momentum dissipation by neoclassical toroidal viscosity. / Zhu, W.; Sabbagh, S. A.; Bell, R. E.; Bialek, J. M.; Bell, M. G.; Leblanc, B. P.; Kaye, S. M.; Levinton, F. M.; Menard, J. E.; Shaing, Ker-Chung; Sontag, A. C.; Yuh, H.

In: Physical review letters, Vol. 96, No. 22, 225002, 19.06.2006.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Observation of plasma toroidal-momentum dissipation by neoclassical toroidal viscosity

AU - Zhu, W.

AU - Sabbagh, S. A.

AU - Bell, R. E.

AU - Bialek, J. M.

AU - Bell, M. G.

AU - Leblanc, B. P.

AU - Kaye, S. M.

AU - Levinton, F. M.

AU - Menard, J. E.

AU - Shaing, Ker-Chung

AU - Sontag, A. C.

AU - Yuh, H.

PY - 2006/6/19

Y1 - 2006/6/19

N2 - 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.

AB - 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.

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