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Nonlinear dynamics of multiple neoclassical tearing modes in tokamaks
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10.1063/1.4799823
/content/aip/journal/pop/20/4/10.1063/1.4799823
http://aip.metastore.ingenta.com/content/aip/journal/pop/20/4/10.1063/1.4799823
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Normalized equilibrium profiles for the plasma pressure (top panel), parallel current density (center panel), and the safety factor (bottom panel).

Image of FIG. 2.
FIG. 2.

Temporal evolution of magnetic energies for coupled and single NTMs (top panel) and comparison of magnetic and flow energies (bottom panel) for , finite .

Image of FIG. 3.
FIG. 3.

Temporal evolution of magnetic energies for coupled tearing modes (TMs) (top panel) and comparison of magnetic and flow energies (bottom panel) for .

Image of FIG. 4.
FIG. 4.

Temporal evolution of magnetic energies with time for coupled TMs (top panel) and comparison of magnetic and flow energies (bottom panel) for , finite .

Image of FIG. 5.
FIG. 5.

contours of coupled tearing modes with (top panel) and with , finite (bottom panel) at saturation.

Image of FIG. 6.
FIG. 6.

Poincare plot showing the magnetic flux surfaces (top panel) and radial profiles of the electromagnetic potential (bottom panel) for coupled tearing modes.

Image of FIG. 7.
FIG. 7.

Comparisons of the evolution of magnetic (top panel) and kinetic energies (bottom panel) for coupled NTMs by decoupling terms.

Image of FIG. 8.
FIG. 8.

Power spectrum of the oscillations in magnetic energies for (2,1) coupled NTMs of Fig. 1 (top panel) and the filled circles in the plot on the bottom panel represent the square of frequencies of oscillations for different values. The lines are analytic curves that have a linear (red, solid), quadratic (blue, dotted) and a fourth power dependence on and have been drawn to show that the data are best represented by a linear fit.

Image of FIG. 9.
FIG. 9.

Temporal evolution of (2,1) modes (top panel) and (3,1) modes of energies (bottom panel) of coupled TMs for , finite .

Image of FIG. 10.
FIG. 10.

Temporal evolution of (0,0) modes (top panel) and (1,0) modes of energies (bottom panel) of coupled TMs for , finite .

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/content/aip/journal/pop/20/4/10.1063/1.4799823
2013-04-08
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Nonlinear dynamics of multiple neoclassical tearing modes in tokamaks
http://aip.metastore.ingenta.com/content/aip/journal/pop/20/4/10.1063/1.4799823
10.1063/1.4799823
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