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Impurity transport in trapped electron mode driven turbulence
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10.1063/1.4796196
/content/aip/journal/pop/20/3/10.1063/1.4796196
http://aip.metastore.ingenta.com/content/aip/journal/pop/20/3/10.1063/1.4796196
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Normalized electron energy fluxes as functions of poloidal wave-number from nonlinear GYRO simulations for Case I (a) and Case II (b).

Image of FIG. 2.
FIG. 2.

Linear growth rate γ (circle markers, blue dashed lines) and real mode frequency (circle markers, red solid lines) as functions of poloidal wave-number for Case I (a) and Case II (b). Linear growth rate γ (diamond markers, green dotted lines) and real mode frequency (diamond markers, orange dash-dotted lines) for the same cases but with parallel ion motion neglected in GYRO.

Image of FIG. 3.
FIG. 3.

Linear growth rate γ (circle markers, blue dashed lines) and real mode frequency (circle markers, red solid lines) as functions of electron-ion collision frequency for Case I (a) (note the logarithmic -axis) and Case II (b). Linear growth rate γ (diamond markers, green dotted lines) and real mode frequency (diamond markers, orange dash-dotted lines) for the same cases but with parallel ion motion neglected in GYRO.

Image of FIG. 4.
FIG. 4.

Linear parallel mode structure of the perturbed potential for Case I (a) and Case II (b). Real part (red solid lines) and imaginary part (blue dashed lines) of ϕ. Real part (orange dash-dotted lines) and imaginary part (green dotted lines) of ϕ for the same cases but with parallel ion motion neglected in GYRO. Note that the actual resolution of the simulation covers , by GYRO convention.

Image of FIG. 5.
FIG. 5.

(a), (b) Impurity peaking factor for trace nickel as function of electron temperature gradient for Case I (a) and Case II (b). Red solid line is the peaking factor from Eq. (5) , orange dashed line the magnetic drifts contribution, and green dashed-dotted line the parallel compressibility contribution. Blue dotted line is the peaking factor from Eq. (5) without parallel compressibility effects. Red diamonds and blue dots correspond to GYRO results with and without parallel compressibility effects, respectively. (c),(d) Linear growth rate γ (circle markers, blue dashed lines) and real mode frequency (circle markers, red solid lines) as functions of electron temperature gradient for Case I (c) and Case II (d). Linear growth rate γ (diamond markers, green dotted lines) and real mode frequency (diamond markers, orange dash-dotted lines) for the same cases but with parallel ion motion neglected in GYRO.

Image of FIG. 6.
FIG. 6.

(a), (b) Impurity peaking factor for trace nickel as function of ion-to-electron temperature ratio (note that ) for Case I (a) and Case II (b). Red solid line is the peaking factor from Eq. (5) , orange dashed line the magnetic drifts contribution, and green dashed-dotted line the parallel compressibility contribution. Blue dotted line is the peaking factor from Eq. (5) without parallel compressibility effects. Red diamonds and blue dots correspond to GYRO results with and without parallel compressibility effects, respectively. (c),(d) Linear growth rate γ (circle markers, blue dashed lines) and real mode frequency (circle markers, red solid lines) as functions of ion-to-electron temperature ratio for Case I (c) and Case II (d). Linear growth rate γ (diamond markers, green dotted lines) and real mode frequency (diamond markers, orange dash-dotted lines) for the same cases but with parallel ion motion neglected in GYRO.

Image of FIG. 7.
FIG. 7.

(a), (b) Impurity peaking factor for trace nickel as function of electron density gradient for Case I (a) and Case II (b). Red solid line is the peaking factor from Eq. (5) , orange dashed line the magnetic drifts contribution, and green dashed-dotted line the parallel compressibility contribution. Blue dotted line is the peaking factor from Eq. (5) without parallel compressibility effects. Red diamonds and blue dots correspond to GYRO results with and without parallel compressibility effects, respectively. (c),(d) Linear growth rate γ (circle markers, blue dashed lines) and real mode frequency (circle markers, red solid lines) as functions of electron density gradient for Case I (c) and Case II (d). Linear growth rate γ (diamond markers, green dotted lines) and real mode frequency (diamond markers, orange dash-dotted lines) for the same cases but with parallel ion motion neglected in GYRO.

Image of FIG. 8.
FIG. 8.

(a), (b) Impurity peaking factor for trace nickel as function of safety factor q for Case I (a) and Case II (b). Red solid line is the peaking factor from Eq. (5) , orange dashed line the magnetic drifts contribution, and green dashed-dotted line the parallel compressibility contribution. Blue dotted line is the peaking factor from Eq. (5) without parallel compressibility effects. Red diamonds and blue dots correspond to GYRO results with and without parallel compressibility effects, respectively, while black hollow squares are results from nonlinear GYRO runs. (c),(d) Linear growth rate γ (circle markers, blue dashed lines) and real mode frequency (circle markers, red solid lines) as functions of safety factor q for Case I (c) and Case II (d). Linear growth rate γ (diamond markers, green dotted lines) and real mode frequency (diamond markers, orange dash-dotted lines) for the same cases but with parallel ion motion neglected in GYRO.

Image of FIG. 9.
FIG. 9.

(a), (b) Impurity peaking factor for trace nickel as function of magnetic shear s for Case I (a) and Case II (b). Red solid line is the peaking factor from Eq. (5) in the symmetric case, green dashed-dotted line corresponds to out-in asymmetry, orange dashed line corresponds to up-down asymmetry, and black dotted line corresponds to in-out asymmetry. Red diamonds correspond to GYRO results. (c),(d) Linear growth rate γ (circle markers, blue dashed lines) and realmode frequency (circle markers, red solid lines) as functions of magnetic shear s for Case I (c) and Case II (d). Linear growth rate γ (diamond markers,green dotted lines) and real mode frequency (diamond markers, orange dash-dotted lines) for the same cases but with parallel ion motion neglected in GYRO.

Image of FIG. 10.
FIG. 10.

Impurity peaking factor for trace nickel as function of electron-ion collision frequency for Case I (a) and an ITG dominated case (b) (note the logarithmic axis). Red solid line is the peaking factor from Eq. (5) in the symmetric case and black dotted line the corresponding in the in-out asymmetric case. Orange dashed-dotted line is the peaking factor in the symmetric case from a model that utilize the Lorentz collision operator, and blue dashed line the corresponding in the in-out asymmetric case.

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/content/aip/journal/pop/20/3/10.1063/1.4796196
2013-03-28
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Impurity transport in trapped electron mode driven turbulence
http://aip.metastore.ingenta.com/content/aip/journal/pop/20/3/10.1063/1.4796196
10.1063/1.4796196
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