a 4 = a Mm ~ * gea * a nrteaaOe naan See se stgenA nk TABLE Lok + Shot 1, H+ 5.2 Days Enercy (Mev) Percent of Flux Cumulative a ee reeee ah ee HORGENEPose 0,035 5.97 0.65 11.53 0.100 36,47 0.135 3.81 0.210 10, L9 0.250 5423 _ 36 52 ! | 0,285 4.05 Jo 04320 2.21 ! 0,486 5.13 65 0.750 5.08 83 | 0.815 1.82 89 | 1.590 1.88 100 | 0,659 h.3 ! 10 i 5435 | BETA ENERGY The beta radiation energy was not measured directly in any of the fallout or soil samples, However, from available data on the radio- chemical composition of the fallout (Reference 6), it has teen estimated that from 30 to 65 pergent of the beta radiation during the exposure period was due W Np*’’, and had an average Ejay of about 0.3 Mev, The balance of the radiation was of higher energy, with an average E.ngy of atcut 1,8 Mev, The half-value thickness in tiss:e for the low energy canponent is about 80 microns, with a range of about 800 microns total, For the high energy component, the half-value thickness ig about 800 microns and the range about 8000 microns, Since no estimate could be made of the anount of material on the sxin surface or length of tine it remained there, only rough estinatas based on clinical evidence could be made of the skin bata doses, (See Reference 16). 21

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