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Continuum resonance induced electromagnetic torque by a rotating plasma response to static resonant magnetic perturbation field
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10.1063/1.4759205
/content/aip/journal/pop/19/10/10.1063/1.4759205
http://aip.metastore.ingenta.com/content/aip/journal/pop/19/10/10.1063/1.4759205
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The radial profile of the safety factor q for the chosen large aspect ratio toroidal equilibrium. The dashed lines indicate the position of the q = 2 rational surface.

Image of FIG. 2.
FIG. 2.

(a) The radial profiles of the (uniform) plasma rotation frequency , the analytic expressions for the Alfvén frequency , and the sound frequency plotted as functions of the safety factor q. (b) The radial distribution of the computed electromagnetic torque density, with the peak amplitude normalized to unity. The Lundquist number of the plasma is S = 109.

Image of FIG. 3.
FIG. 3.

The detailed radial distribution of the computed electromagnetic torque density as shown in Fig. 2(b), near each resonant surface at (a) q = 1.9128, (b) q = 1.9940 and 2.0060, (c) q = 2.1979, and (d) q = 2.3420. The symbols “ + ” indicate the packed radial mesh.

Image of FIG. 4.
FIG. 4.

Radial profiles of the poloidal Fourier harmonics of the computed plasma current perturbations, for (a) radial, (b) poloidal, (c) toroidal, and (d) parallel components, respectively.

Image of FIG. 5.
FIG. 5.

Radial profiles of the poloidal Fourier harmonics of the computed plasma current perturbations near the first resonant surface q = 1.9128, for (a) radial, (b) poloidal, (c) toroidal, and (d) parallel components, respectively.

Image of FIG. 6.
FIG. 6.

Radial profiles of the poloidal Fourier harmonics of the computed plasma current perturbations near the fourth resonant surface q = 2.1979, for (a) radial, (b) poloidal, (c) toroidal, and (d) parallel components, respectively.

Image of FIG. 7.
FIG. 7.

Radial profiles of the poloidal Fourier harmonics of the computed plasma current perturbations near the second and third resonant surfaces q = 1.9940 and 2.0060, for (a) radial, (b) poloidal, (c) toroidal, and (d) parallel components, respectively.

Image of FIG. 8.
FIG. 8.

The integrated electromagnetic torque density across the plasma minor radius with (a) the full profile and (b) the detailed profile near resonant surfaces. The dashed lines indicate the amount of net torque gained while integrating across each resonant surface.

Image of FIG. 9.
FIG. 9.

Radial profiles of the computed electromagnetic torque density with different values of the Lundquist number S = 106, 107, 109, for (a) plasma rotation frequency and (b) .

Image of FIG. 10.
FIG. 10.

The computed net electromagnetic torque, acting on the plasma column, versus the magnetic Lundquist number S, for (a) plasma rotation frequency and (b) . Both the volumetric integration (“o”) and the vacuum surface integration (“ + ”) methods are applied to compute the net torque in (a).

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/content/aip/journal/pop/19/10/10.1063/1.4759205
2012-10-17
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Continuum resonance induced electromagnetic torque by a rotating plasma response to static resonant magnetic perturbation field
http://aip.metastore.ingenta.com/content/aip/journal/pop/19/10/10.1063/1.4759205
10.1063/1.4759205
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