be readily extracted from the sources cited. Induced product contributions may be added in after diminishing the tabular values (product/fission = 1) by the proper ratio. After the result- ant computed doghouse-counter decay rate is compared with experiment, the ionization rate (SC) may be computed for the same composition. Beta activities may also be computed for this com- position— making allowance for those disintegrations that produce no beta particles. The Navajo composition was computed in this manner, as were the rest of the compositions, once fractionation corrections had been made. Shot Zuni. A number of empirical corrections were made to the computations for unfractionated fission products in an effort to explain the decay characteristics of the residual radiations. from this shot. The lagoon-area composition was developed first, averaging available lagoon area R-values. As shown in Figure 3.32, R-values of nuclides which, in part at least, are decay products of antimony are plotted against the half life of the antimony precursor, using the fission-product decay chains tabulated in Reference 56. |. \ (Somejustification for the . If the assumptions are made that, after ~45 minutes, the R-values of all membersof a awed3 are identical, and related to the half life of the antimony precursor, then Figure 3.32 may be ased to estimate R-values of other chains containing antimony precursors with different half lives. The R-value so obtained for each chain is then used as a correction factor on the activity (Reference 41) of each nuclide in that chain, or more directly, on the computed doghouseactiv- ity or ionization (SC) contribution (Table 3.21). The partial decay products of two other fractionating precursors, xenon and krypton, are also shown in Figure 3.32, and are similarly employed. These deficiencies led to corrections in some 22 chains, embracing 54 nuclides that contributed to the activities under consideration at some time during the period of interest. The R-value of I'*! was taken as 0.03; a locally measured but otherwise unreported I'*¥1'*! ratio of 5.4 yields an I'? R-value of 0.16. Although the particulate cloud composition might have been developed similarly, using a different set of curves based on cloud R-values, it was noticed that a fair relation existed be- tween cloud and lagoon nuclide R-values as shown in Figure 3.33. Here R?(x) cloud/R*%(x) lagoon is plotted versus R®*(x) lagoon average. The previously determined lagoon chain R-values were then Simply multiplied by the indicated ratio to obtain the corresponding cloud R-values. The lines indicate the trends for two other locations, YAG 39 and YAG 40, although these were not pursued because of time limitations. It is assumed that the cloud and lagoon compositions hee extremes, with all others intermediate. No beta activities were computed for this Shot Tewa. Two simplifying approximations were made. First, the cloud and outer sta- Hon average R-values were judged sufficiently close to 1 to permit use of unfractionated fission token Second, because the lagoon-area fission-product composition for Shot Tewa appeared the same as for its Zuni counterpart except in mass 140, the Zuni and Tewa lagoon fission Products were therefore judged to be identical, except that the Ba'‘°-La'° contribution was in‘eased by a factor of 3 for the latter. WheThe inducedproducts were added in, using product/fission ratios appropriate to the location . ever possible; however, the sparsity of ratio data for fallout samples dictated the use of values for most of the minor induced activities. : 3.4.6 Results and Discussion. Table B.22 is a compilation of the computed doghouse count- tn mes for the compositions described; these data and some observed decay rates are shown me igures 3.34 through 3.37. All experimental doghouse-counter data is listed in Table B.23. . cone Similarly summarizes the Flathead and Navajo computed beta-counting rates; they ™Mpared with experiment in Figure 3.38, and the experimental data are given in Table tion of Results of the gamma-ionization or dose rate (SC) calculations for a surface concentra10 fissions/ft? are presented in Table 3.22 and plotted in Figure 3.39. It should be em8 ized that these computed results are intended to be absolute for a specified composition 59