FEDERAL EMERGENCY MANAGEMENT AGENCY

Jul 26, 2013 · The 5 x 5 cm (2x2 in.) Nal(Tl) crystal detector is able to detect radioactivity levels approximately equivalent to a 0.03 rem dose commitment for two year olds under the test background conditions. The smaller 3.2 x 3.8 cm (1.25 x 1.5 in.) Nal(Tl) crystal detector is able to detect radioactivity levels equivalent to a 0.14 rem dose commitment ... ................
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