SAMPLING MISSION
Because of the high wind shear and expected rapid break up of
the cloud, "A" flight, Tiger Red One was put in for a brief sniff at
plus 30 mimutes and reported radiation intensities which were obviously
incorrect, but time and dosage calculations showed that considerable
activity was being retained in the thin cloud section,
At plus 1 hour
this aircraft was directed to penetrate straight through the topmost
leg of the cloud and was able to gather the required sample on a 30
second penetration,
"B" flight, Tiger Red Two was directed into the
next lower promising piece of cloud, at 21,500 feet and reported cloud
radiation intensities essentially in agreement with the prediction
.
curve, as did "C" flight, Tiger White One and Two which was put into
J
the cloud shortly thereafter, in the third portion of the cloud at
10,000 to 1,000 feet,
By this time it was becoming apparent that the
very long thin strings into which the cloud had stretched were holding
together better than would normally be expected for such a thin piece,
"D" flight, Hotshot, had plenty of fuel, so was held in the air for an
additional 30 mimutes and then directed at plus 2 hours to make
penetrations through the various small bits of cloud still existing
from 31,000 down to 19,000 feet,
Cloud radiation intensities were still
adhering to the normal curve, and Hotshot collected a good sample in spite
of the small size of his targets,
NUMBER RATIOS
The mmber of fissions measured in the samples by radio-chemistry at
Los Alamos averaged about 83% of the number predicted at PPG from observation of radiation levels of the sample papers through the shipping pigs
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