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Modification of tokamak edge plasma turbulence and transport by biasing and resonant helical magnetic field
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10.1063/1.4805066
/content/aip/journal/rsi/84/5/10.1063/1.4805066
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/5/10.1063/1.4805066

Figures

Image of FIG. 1.
FIG. 1.

Typical schematic of (a) the L = 2/1 and L = 3/1 RHF and (b) the limiter biasing setup on IR-T1.

Image of FIG. 2.
FIG. 2.

Typical schematic of Langmuir probe (up) and Rake probe (down).

Image of FIG. 3.
FIG. 3.

Superposition of (a) power spectrum of during 2 ms (13 < t < 15 ms), (b) power spectrum of during 2 ms (20 < t < 22 ms), (c) power spectrum of ∇ during 2 ms (13 < t < 15 ms), (d) power spectrum of ∇ during 2 ms (20 < t < 22 ms).

Image of FIG. 4.
FIG. 4.

Analysis of fluctuation spectra during 2 ms (20 < t < 22 ms), includes (a) cross power spectrum of (∇ ); (b) phase between (∇ ); (c) coherence of (∇ ).

Image of FIG. 5.
FIG. 5.

(a) Plasma current; (b) time evolution of radial particle flux at the r/a = 0.9; (c) time evolution of radial particle density at r/a = 0.9; (d) time evolution of particle diffusion coefficient. No smoothed version of the diagrams was plotted at the corner of each diagram.

Image of FIG. 6.
FIG. 6.

Histogram of radial particle flux; (a) bias and RHF were applied at t = 15 ms and t = 20 ms, respectively. (b) RHF and bias were applied at t = 15 ms and t = 20 ms, respectively. (c) RHF and bias were applied at the same time (t = 15 ms). The histogram was drawn in the time interval between 15.5 ms < time < 30 ms.

Image of FIG. 7.
FIG. 7.

Histogram of gradient of particle density; (a) bias and RHF were applied at t = 15 ms and t = 20 ms, respectively. (b) RHF and bias were applied at t = 15 ms and t = 20 ms, respectively. (c) RHF and bias were applied at the same time (t = 15 ms). The histogram was drawn in the time interval between 15.5 < time < 30 ms.

Image of FIG. 8.
FIG. 8.

Histogram of particle diffusion coefficient; (a) bias and RHF were applied at t = 15 ms and t = 20 ms, respectively. (b) RHF and bias were applied at t = 15 ms and t = 20 ms, respectively. (c) RHF and bias were applied at the same time (t = 15 ms). The histogram was drawn in the time interval between 15.5 ms < time < 30 ms.

Tables

Generic image for table
Table I.

Average values of particle flux, density gradient, and particle diffusion coefficient at different time.

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/content/aip/journal/rsi/84/5/10.1063/1.4805066
2013-05-21
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Modification of tokamak edge plasma turbulence and transport by biasing and resonant helical magnetic field
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/5/10.1063/1.4805066
10.1063/1.4805066
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