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THE RGI-20 RADIAC SYSTEM. A WIDE-RANGE BETA-GAMMA INSTRUMENT. PART I. SURVEY METER SKINDOSE PROBE
NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF
Design criteria were established following a survey among radiac specialists in the three services, and among Laboratory personnel and civil defense instructors. The resulting design includes these features 1 A lowimpe ance circuit giving 20 accuracy from -40 to 50 C, with no zero drift 2 A 50-cu in. belt-carried package which satisfied Mil-E-16400 environment specifications 3 Gamma rate from 1 to 1,000 radhr, skin-dose rate to 5,000 radhr from a separable probe, each indicated on several linear meter scales and 4 A connector for a four-decade, low-range probe, and other possible auxiliary probes. Six prototypes have been fabricated. Work is continuing toward packaging the low-range probe and toward reducing costs of manufacture. Author