
Figure 1. Sketch of the saturation mechanism.

Figure 2. Color plot of the total density and vector plot of the E x B flow field obtained from the reduced-mode computer model during stationary state behavior. Red represents the regions of highest density, blue the lowest density.

Figure 3. Color plot of the total density and vector plot of the E x B flow field obtained from the particle simulation. Red represents the regions of highest density, blue the lowest density.