Electrostatic source for distributing ions uniformly onto surfaces of flowing aerosol particles, where numerous channels (C1, C2,...,Cn) passing fluid, pass through a receptor electrode (ER), is new. Their openings (O1, O2,...,On) are distributed quasi-uniformly over the active face (SA) in two geometric directions (yy', zz'). Electrostatic source for distributing ions uniformly onto surfaces of flowing aerosol particles, where numerous channels (C1, C2,...,Cn) passing fluid, pass through a receptor electrode (ER), is new. Their openings (O1, O2,...,On) are distributed quasi-uniformly over the active face (SA) in two geometric directions (yy', zz'). In addition, sharp points emerge from the otherwise planar active face (SA) of the receptor electrode, forming prickly zones (Ai). Locally, they present a tiny radius of curvature (ra). Their distribution is uniform over the area. The points surround the openings. A superficial ion (iq) flux (Is(r)) is established from a corona electrode (EC) towards the face (SA) of the receptor electrode (ER). Superficial ionic intensity (J(Q(r)) at points Q(r) near the active face (SA) has a spatial ionic intensity distribution Is (r) of increased uniformity, in relation to variation of spatial distance (r) between the corresponding projection point (P(r)) of the active face (SA) of the receptor electrode and the principal zone of ionic action (A) surrounding the geometric center (O) of the area of the straight projection of the discharge zone (D) of the corona electrode (EC) onto the active planar area (SA). A wide active zone (S) surrounds the geometric center (O), in which a uniform quantity of ions (iq) is deposited on the area (sp) of aerosol particles (p1, p2,..., pn) having the same order of diameter (dp), which is carried by the fluid (F) through the openings (O1, O2,..., On).