Power density, E ∙ J, for the low-alpha (rows 1 & 3) and the high-alpha (rows 2 & 4) cases. The upper two rows show the x - z plane at y = 0 km (same as Figure 1), while the lower two rows show the y - z plane at x = −1000 km (same as Figure 2). Columns 1-3 show the power density of protons, alpha particles, and cometary ions, respectively. The last column shows the total power density E ∙ J. For better visibility, the results of the power density of alphas in the low-alpha case (Column 2, rows 1 and 3) are scaled up by a factor of 20.