b.
Techniques
1. Zircgnium samples used as threshold detectors were placed
at various distances from the device and recovered several days after the
detonation. The samples were counted, and the ee
the device was determined from the zirconium activation cross section and
the neutron transmission coefficients.
Peeters produced by the device was calculated
and the percentage burn and amount of mixing estimated.
.
3. Nuclear emulsions were exposed to the collimated neutron
flux from the device. The neutron flux and energy distribution were determined by track-counting analysis.
4. These data were analyzed to augment the data obtained from
the threshold detectors.
c.
Results
f
The results are listed in Table 2.3.
TABLE 2.3
EXTERNAL NEUTRON MEASUREMENTS ON BOOSTED DEVICES
D
Per Cent
Device
Burn
DELETED
pELETED
pELETE
:
Total Number
of 14-Mev Neutrons
pries™D
pELETED
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