SMALL BOY SHOT FALLOUT RESEARCH PROGRAM
6:
The computed values of K, are plotted as a function of dey ir
Fig. 4. It may be noted that the curves of i(100), i’(100), and K, giver
as a function of d;) in Figs. 2, 3, and 4 are very similar to the curve
for i(100) plotted as a function of d in Fig. 1.
3000
TOT TTT TTT
ry yt
10,000
TTT TTT TTT
TT TT TTT3
& TWO VALUES
4
i
Ky, R/HR AT 1 HR PER KT/SQ MILE
THREE VALUES
100
Lt
10
pri
100
Lt
tt tee
1000
Lt
PLL
10,0€
dso. B
Fig. 4——Variation of Kg with dsp for fallout-collecting stations.
The high values of K, for the stations in the 35- and 56-numbered
series (Table 7) suggest that the I, values are overestimated by correction of the monitoring data! to 1 hr with the t~' function. The
adjustment of the two apparently different sets of reported A, values:
to a midvalue rather than correction of one of the two sets of data to
be consistent with the other may have resulted in Ky values that are
either low or high by 25%. Further investigation of the reported data®
together with theoretical analyses may suggest what corrections are
appropriate.
The Dq terms of Eq. 12 can be evaluated using an appropriate
value of Keo The selection of a value hereis limited to the k,, value
for the fission products from the thermal-neutron fission of 2357)
because the i(100) and r, values, as deduced from the ion-chamber
measurements,
are based on the response of the ton-chamberto the
3507 products. The calculated value® of k,, is 3950 r/hr at 1 hr per
kiloton per square mile. The Dq of Eq. 12 is given by
Dq =
K
Ky
3950 r,P
20)