otter.experimental.mixture_ionic_background_profiles

otter.experimental.mixture_ionic_background_profiles(gij_r: ndarray, volume_weights: ndarray) → ndarray[source]

Return the effective ionic background profile seen by every AA species.

For central species i, the positive ionic charge background is

n_e^0 g_i^bg(r) = sum_j n_j Z_j^* g_ij(r).

The common-mu mixture volume closure gives n_j Z_j^* / n_e^0 = w_j, where w_j are the AA volume weights. Consequently g_i^bg = sum_j w_j g_ij and its large-r limit is one.