©:SE on) Project 2.€) © Rocket Determination of the Activity Distribution Within the Stabilised Cloud - 2, Soule OBJ SCT IVES To Jetermine the spatial distribution of radioactivity in the clout of high yield thermonuclear jetonations at two early times, The following special objectives are sough*: Relative activity listritution between stam and cloud. Rate of change of activity at early times. Performance of atmospirric sounting vehicles (AS°) up to high altitudes in an atomic clou!, and particularly whether inform.‘ion can be telenete-e! out of the railoactive clou!,. DESCRIPTION AMD TXTSE IMENTAL PROS INE The radioactivity in the cloud was ietectel by pressure ion chambers borne by rocket propalle! a*mospheric souniing veticles, The data was telametere!? back to esascntially jluplicate r-celving- recorting stations on ayu (Nan) and aboard the USS “NUDSEN, Six rockets each were fired in to salwos at 5 tinutes and [7 minutes after fdotonation, Various trajectories were sel>-tel by preshct aiming of the launchers, Wichest altituls achievel was about 169,%) ft, RESULTS All rockets fired an! poo! signal strength wa: received on all channels, The ratiation flelis that were measured, while of relitively high dntensity, were lower than those encountere! in BD (CHTRCKEF). Channels corresponiing tc rockets shot as the lowest ele- wation hai no data on the carrier indicstin.. they may huve missed the BEST AVAILASLE COPY -%- =e a

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