An. 7 The average betaenergy is 0.5 Hev. H. The gama dose is negligible compared to the beta dose, j- G. 4 -— George, is. caatte) ii... Tika a1. dvoroxinste XY i Cavities iAe ateiaed 2295. Duration Detonstion after ana 0610 = 1130 1130-1445 1445 = 1843 1845 = 2300 4.3 «3.2 4.0 4.2 brs brs brs brs 3 bre 6 brs 12.5 brs 15.8 bre bl? 2.38 63x 19" hh xlom® 2300 ~ 0635 «7.5 hrs 21.5 bre 14x10 0,087 0.02 #0635 = 1835 *Ascured 12.0 hrs 31.5 bre 1gxi0% 0.139 0.03 15. 6.3 2.2 1.50 Calculations D a Lets 5at,t-2 Be? - 27 t, = 3 hours ty § 2184 hours (13 weeks) = 3 pe Ds (5)(3 x 2.22 x 108 x 60) (3) 2-2 £2 . 218470-27 = 4.4.x 10” disintegrations from ird hour te lith week. Assumes Bae. #2 0.5 Mev (4.4 = 109) (0,5) (2.6 x 107) (Sqq—) (gh ) 3 4.2 x 1072 repe Total Lung Dose for 13 weeks: ng omy a fope -~125 mreps > 3 9.2) 3.0 1.26 0.63 0.5