Assure: a. Point source b. 0.5 Mevware beta energy a, “Rate“ofohh follows 472-2 The dose delivered at the surface of an imaginary sphere at distance R from a point source.” (2) x(n) Eo a ~ vhere:mz(R) = dose delivered at the surface of an promos imaginary sphere et distance F : @ totel __ Substdtutingys 20en?/an Then: (2) x(a) 50.397 r egr: fi © nase absorption cosfficient SLE gu-disintegration gk (3.0.) K(R) = 2B x 10 ‘ i — gr 35 «102 (3.b.) K(R) 2 ge x 1076 52 Billivers_ Disintegration glllirsds disintegration Equation (3.a.) 1s plotted on the attached graph. FOR FISSICN PRODUCTS, —~o f | } —~ @ ,-» wed (5) ay 45k, wes wheres ~ 4, = disintegrations per unit tine at time "a" after detonati 4) ® disintegrations per unit tine at one unit of tire after & *hossi, H.H. and Ellis, RH. “Distributed Beta Sources in Uniformly Vedia" Kueleonie: July 1950, V. 7, Ko. 1 C6 Absorbing