au , i'w oh ee fino 4 | | 1 | ne | | Hib +ALL ctl ' a | SRR | 4 teh en it - st We —— oo — he 20 MK) TIME Fag. ft. HQ) po ——_ + —-— a0 4 fut (HR) Cumulative Dose as a Function of Time After the Detonatton 7 t | | i | ' 4 | ‘ BIL AIF RAL EXPOSURE, UIVE RGING SOURCE ! n Io Q | 1 . 4m EXPUSURE, MANY SOURCES ‘ a ‘, 10 (-) 1 : + 39% ! | | ‘K ! | b 1§ \ 20 25 J 30 $6 CM MASONITE DEPTH DOSE DISTRIBUTION IN CYLINDRICAL PHANTOM, CO® FACILITY, (NMI!) Fig. 1.40 Comparative Depth Doses for Bilwteral Exposure from a Small Source and Multiple Seurce 47 Exposure with Cobalt-0 od i: " a ene teh . . . fame * 2 ae on - . oe . we see -.