mee aN - -. io ahs SOT ate Brevi Pipure lu rives the electrical characteristics of the charger at varicus altitudes. The charger dimensions are &" long by 2.675" diameter, having a wire of .012" diameter. Neglecting end effects SC 4 = lOx0Sx3x10- of 100,000 feet 8 x 2.5L giving a value of 2.62 x 104 statamps/com. 100,000 feet 600 x E 160) (213 B. 1 273 or 2 (2.62 x 1014) 60 600 x ois x 100 = 273 The mobility at = 1.1 ESU. 8 The actual observed voltage divided by the radial distance from to cylinder gives a figure agreeing within 20% of the calculated figure which for our purposes is sufficiently good. For equation (5), the ion density in the charging device is requi This can be calculated by assuming a linear potential distributig as given by Pauthenier for this case. If = = E is constant then the velocity of the ions is constart anc given by Vv; # ky (22) P 213 273 E 5.8 x 10 em/sec the tire to traverwa distance dr from the wire towards the evlinder is then dr V4 will then be Q ayprO yp iar a "BE Is* Pir v at a radius r. Assuring particles entering at 1/2 cm radius, then the ion density No at this radius is No = 27TE ka : Te) (3 -70UNCLASSIFIED | er tr it Tv durine this time e charre Q # it has filled a 1 cm length cer evylinder cr in radiai thickness. The value of tne charge denk