banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Numerical simulation of geodesic acoustic modes in a multi-ion system
Rent this article for
View: Figures


Image of FIG. 1.
FIG. 1.

The equilibrium configuration used in the simulation.

Image of FIG. 2.
FIG. 2.

Semi-Lagrangian scheme.

Image of FIG. 3.
FIG. 3.

(a) GAM electric field oscillation with , q = 2.6. (b) Spectrum of the GAM oscillation, with the dashed line indicating the GAM frequency predicted by S-W theory.

Image of FIG. 4.
FIG. 4.

GAM frequency and damping rate vs charge number of impurity ions, with the effective ion mass number fixed. In case 1, , ; in case 2, , ; and in case 3, , .

Image of FIG. 5.
FIG. 5.

Time evolution of the radial electric field for different parameter ; , , , .

Image of FIG. 6.
FIG. 6.

Comparison of frequency and damping rate between theory and simulation; , , , . Here, the solid and dashed lines show the theoretical result evaluated by Eqs. (10) and (11) , respectively. The cross points are the simulation results.

Image of FIG. 7.
FIG. 7.

Amount of the 1st order resonance hydrogen ions.

Image of FIG. 8.
FIG. 8.

Same as Fig. 6 , except that , .

Image of FIG. 9.
FIG. 9.

Same as Fig. 6 , except that , .

Image of FIG. 10.
FIG. 10.

(a) Contour plot of normalized and the particles transit frequency in velocity space with , , . The relative larger values of indicate resonances between particles and wave. (b) The 1st order resonance and the 2nd order resonance . (c) The 3rd order resonance .

Image of FIG. 11.
FIG. 11.

Same as Fig. 10 , except that , .


Article metrics loading...


Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Numerical simulation of geodesic acoustic modes in a multi-ion system