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Spectral asymmetry due to magnetic coordinates
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10.1063/1.2932110
/content/aip/journal/pop/15/6/10.1063/1.2932110
http://aip.metastore.ingenta.com/content/aip/journal/pop/15/6/10.1063/1.2932110
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Constant lines of the poloidal angles with intervals of 36° for (a) PEST, (b) Boozer, and (c) Hamada magnetic coordinates in a NSTX plasma, with a single lower null divertor. Note the strong distortion of the poloidal angle when in (a) compared with the other coordinate systems.

Image of FIG. 2.
FIG. 2.

The distortions of toroidal angle for (a) Boozer and (b) Hamada coordinates, at radial positions , 0.3, 0.5, 0.7, and 0.9. The amplitude of increases with . The same NSTX plasma as in Fig. 1 is used. Note and also the slight deviations from it due to the lower separatrix.

Image of FIG. 3.
FIG. 3.

Comparison of poloidal Fourier spectra of the flux decomposed on the surface using PEST (black), Boozer (blue), and Hamada (red) magnetic coordinates in a NSTX plasma with applied field. The symmetry in PEST magnetic coordinates is not preserved. The dotted line shows the resonant Fourier harmonics of are independent of the choice of magnetic coordinates.

Image of FIG. 4.
FIG. 4.

Comparison of poloidal Fourier spectra of the normal field decomposed on the surface using PEST (black), Boozer (blue), and Hamada (red) magnetic coordinates in a NSTX plasma with applied field. The symmetry in PEST magnetic coordinates is not preserved. The dotted line shows the strong dependence of the resonant Fourier harmonics of on the choice of magnetic coordinates.

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/content/aip/journal/pop/15/6/10.1063/1.2932110
2008-06-17
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Spectral asymmetry due to magnetic coordinates
http://aip.metastore.ingenta.com/content/aip/journal/pop/15/6/10.1063/1.2932110
10.1063/1.2932110
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