>} Program 2 = WUCLEAR EFFECTS Program Director - E. A. Martell, LtCol, USA ‘Project 2.1 = GAMMA RADIATION DOSIMETRY Project Officer - R. H. Dempsey Objective To measure the gamma radiation exposure at various locations following + een a nuclear detonation. Instrumentation Film and chemical dosimeters were placed in 3" aluminum cannisters meted on 2" aluminus stakes. 3 feet above ground. The detectors were placed at a height of Both detecting systems were calibrated against an ope wy re Swe ot U Mev betatron, Results Shown in Table 2-1-1, Diecussion dnalypis of the date was made assuming a fall-out time of } hr. Watime 76, 77, 78, and 79, show evidence of having been exposed to | Smmdersble initial radiation in addition to the residual radietion it mut heave been present. Unfortunately, the films from stations 76, p+ @ Ran partially destroyed, the data from 78 being based on the : “WS place of fie found, It 1s hoped to be able to plot an RD* vs D E "T™ Fe the initial radiation shen the chemical detectorsare analyzed. 3 = “ponent was calculated for the remaining stations and e erage Valo of 1.13, BEST AVA ILABLE C opy Zin 2 ey De dncay