sanples taken soon after the detonation in the cloud itself at some cistance from the atolls (Keference 5), Again they represent the best data available and, in the atsence of contrary evidence, had to be taken as typical of the fallout on the islands, TABLE 4.1 - Shot 1, H+ 9h Hr Cumulative Percent Percent of Flux Energy (Mev) (See Text) e tos —— 100 720k 1.59 0.99 1.27 0.80 0.96 2.70 80 0.84 3.71 6S 0.76 0,66 19,2) 6 0.50 12,15 1 0.27 4.82 0.10 | 4.2 | ee ; 7 ; : 2 6.00 0,22 A tit | 15,11 | ! 83 1.37 20.2h | 0.068 $.0h 0,018 2.17 8 DOSE-ENERGY DISTRIBUTIONS FOR PLANE SOURCE CEOMETRY Te campute the proportion of total airdose due to a given energy interval in the degraded spectrum which resulted from the cpectrum of the original sample, the dose from the spectrum cue to the exitter dis- tributed as an infinite plane source was calculated by surming the contributions over all path lengths in air, By dividing the original H+ 94 hour spectmm into 13 erergy regions and carrying out this froe- ess (heference 7) for each, a cumulative dose versus energy curve resulted, The cumulative doses are siven in Tables L.1, 4.2, and h.3. From these curves, a differential histoeram of percent cose versus energy interval was determined which represents the percent of dose . * ° + Sa canied * °