0018933
are calculatedfrom R-values averaged fromthe particulats sonples tal:en in thz
main cloud on the same aircraft as the gas samples.e
.
tte /The fractions for Oak are also trom averages, here in the light
and variable stratum, while for Walnut the stabilized condition shown in
Figure 3,1 is used,
Sample 980 L for Oak is not included due to the poor
sampling conditions.
|
The fractions of these nuclides remaining in the cloud after one day
are given in Table 3, 2.
These numbers are to be interpreted as the quan-
tity of material which does not come downin the local area,
The limits
assigned are derived from the variability in the data,
TABLE 3.2
-. PERCENT .-.- @& NUCLIDES LEFT IN CLOUD AFTER ONE DAY
Koa
Walnut
Oak
j
a
Mo99
sr 90
C5137
242
8+8
36 + 36
20 + 5
2 +6
3629
Wes
(23-4 10
LO + 23
1
Of the curves for the fraction of Mo?? left in the clouds, the one for
the water surface burst shows to a considerable degree the behaviour anticipated when the project was planned,
On the reef shot, the points appear
to be fluctuating around a fraction of 0, 11, whereas for the land surface
detonation there is insufficient data to do anything but extrapolate beyond
6,5 hours,
Since it is likely that the fission ratios would be aroun
d one
75
-