OPERATION DOMINIC, FISH BOWL Series. Project Officer's Report - Project 2.2. Gamma Radiation Measurements
ARMY NUCLEAR EFFECTS LAB EDGEWOOD ARSENAL MD
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This project was conducted to measure the initial gamma dose as a function of distance fo Shots Star Fish Prime, Blue Gill Triple Prime and King Fish. To accomplish these objectives, the gamma dose was measured by film badges, glass microdosimeters, cobalt-activated borosilicate glass, calcium fluoride thermoluminescent dosimeters, and formic acid chemical dosimeters. The gamma dose versus distance was successfully measured from all three shots and the gamma doses from all events were within designed experimental error and precision. By the use of cobalt-activated borosilicate glass plates at two different locations in the instrument pods, Project 2.2 was able to measure the differential thermal neutron flux created by the thermalization of fast neutrons by the pod mass. The formic acid chemical dosimeter failed to provided reliable gamma doses due to its high dose-rate dependence. The CaF2 thermoluminescent dosimeter provided reading that were considerably higher than those measured by the other detectors. Further rate dependence studies are necessary to explain this discrepancy.
- Nuclear Instrumentation