dats obtained by USASROL ware lower by a factor of 10 or more than the
Super-Effects Handbook prodictions (Reference 3).
One of the purposes of Project 2.2 was to reeolve the initialgarme radiation ecaling laws for high~yield devices. Of particular
interest was e high-yield eirburst, since it would allow correlation of
the hydrodynamic effect from an airburst with that from a surface burst,
UCASRDL made measurements of reaidual-game exposure rates from high-
yield devices during Operation Castle (feference 2). Only limited
te wort obtained because of a high loss of instruments carly in th:
operation.
These date indiceted that the decay mqonent for the residuch
activity varied with the type of nuclear device.
Another purpose of
Project 2.2 was to detemmine accurate decay exponents for residual “tf
activity.
The thermileradtstion detector, part cf 2° ecorlys amc: syste:
for muclear detonations, vas teeted with loryield devices durine OQoer--
tion Teapot (Reference 4), The tests ware successfully the detector
ahowed a capability far in excces of the requiromnts.
IH ws decided
to determine the rosponse of this detector to “egaton-range devices
@uring Operation Reding in order t< complete the testing.
1.3 THEORY
ST. WL si3 ERE
The gam redistion emitted from e nuclear dotonetion may be
aividod inte te portions:
initial radintinn and residuc) radiation.
The residual radietion mey includ>s radiation from both fallout and
heutron-imhwad activity.
’
JA