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background counts
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it’s important to keep track of your radiation exposure
It also provides static or dynamic compensation of beta measurements for gamma background depending
Ludlum Model 44-21 Beta-Gamma Detector Scionix Holland background countsIndicated Use Beta; Low energy gamma detection Detector Type NaI(Tl) scintillator, 2. 54 cm (1 in) dia. x 0. 1 cm (0. 04 in) thick, adhered to plastic scintillator, 0. 03 cm (0. 01 in) thick Window 3. 4 mg cm2 Window Area Active: 5. 1 cm2 (0. 8 in2) Open: 5. 1 cm2 (0. 8 in2) Efficiency (4) 14C: 4% 32P: 28% 125I: 38% 129I: 19% Typical Background (10 R hr field) 450 cpm Non Uniformity < 10% Photomultiplier Tube 3. 8 cm (1. 5 in) diameter Operating
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US$ 16.95