UNCLASSI FIED Substituting values + 2 170 x 10° x 3 x 109 = B x 2.5k P= 8.1 at 600 | k3 = r= 2.62 , x iol 213 .5 cm e = h.8 x 10-10 E = 1.32 No at .S cm radius (d) = 2.9 x 10° ions/cc Calculation of No charges per particle (field charging) qa = |jl#2 ko -'1 Kd 2 ee) x he c x (a) a (ob) 1 1+ re (c) Term (a) depends solely on the dielectric constant of the dus which we shall assume to be approximately 3. Hence 142(23 = 2, 341 Term (bd) multipled by term (a) represents the saturation cha or the maximum charge obtainable on the particle. Term (c) determines the % of maximum number of charges and depends primarily on the time of the particle in the field of given current and field intensity. The time in seconds to traverse the charger is length of charger _ 8 x 2.5L: _ air velocity 1136 -82~ UNCLASSIFI ED 018 sec