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Electromagnetic effects on trace impurity transport in tokamak plasmas
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10.1063/1.3276102
/content/aip/journal/pop/17/1/10.1063/1.3276102
http://aip.metastore.ingenta.com/content/aip/journal/pop/17/1/10.1063/1.3276102
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Electromagnetic gyrokinetic calculations of particle fluxes for trace impurity helium (charge concentration ) as a function of the normalized logarithmic gradients [(a) and (b)] and [(c) and (d)] using GYRO. The background fluctuations in the electron-deuteron plasma have been chosen to be ITG dominated according to the ITG reference case.

Image of FIG. 2.
FIG. 2.

Linear gyrokinetic calculations of eigenfrequencies (a), growth rates (b), and of the coefficients (c), (e) and (g), as well as of the corresponding magnetic flutter (Fl) components (d), (f), and (h), as a function of for trace impurity helium at .

Image of FIG. 3.
FIG. 3.

Gyrokinetic calculations of eigenfrequencies (a), growth rates (b), and of the coefficients (c), (e), and (g), as well as of the corresponding magnetic flutter components (d), (f), and (h), as a function of for trace impurity helium at . The open symbols indicate spectrum averaged values as described in the text.

Image of FIG. 4.
FIG. 4.

Electromagnetic dependence of the trace impurity and magnetic flutter (Fl) transport coefficients [(a)–(d)], [(e)–(h)], and [(i)–(l)] for increasing impurity charge with impurity mass . Left column plots show results for the ITG reference case, while right column plots show results for the TEM reference case.

Image of FIG. 5.
FIG. 5.

Electromagnetic dependence of the trace impurity and magnetic flutter transport coefficients [(a)–(d)], [(e)–(h)], and [(i)–(l)] for increasing impurity charge , while keeping the impurity mass fixed . Left column plots show results for the ITG reference case, while right column plots show results for the TEM reference case.

Image of FIG. 6.
FIG. 6.

Electromagnetic dependence of (left) and magnetic flutter (Fl, right) transport coefficients for the impurities tritium, helium, carbon, nickel, and tungsten (at the ionization stage of ) using typical H-mode profile data, as those predicted for the ITER standard scenario. The charge concentration is assumed to be .

Image of FIG. 7.
FIG. 7.

Electromagnetic dependence of the ratio of the (a) and magnetic flutter (b) off-diagonal contributions (including both thermodiffusion and pure convection) to the total diagonal diffusion, for tritium, helium, carbon, nickel, and tungsten (at a ionization stage of ), using typical H-mode profile data as those predicted for ITER. The charge concentrations are assumed to be . The shaded areas denote the projected values for standard and hybrid operational scenarios.

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/content/aip/journal/pop/17/1/10.1063/1.3276102
2010-01-26
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electromagnetic effects on trace impurity transport in tokamak plasmas
http://aip.metastore.ingenta.com/content/aip/journal/pop/17/1/10.1063/1.3276102
10.1063/1.3276102
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