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This detector operates between 850 to 1000 volts and is compatible with any Ludlum instrument capable of supplying 900 VDC and an input sensitivity of 30 mV or higher
technical specs:
detector test etc
it’s important to keep track of your radiation exposure
Ludlum Model 44-21 Beta-Gamma Detector Scionix Holland This detector operates between 850Indicated 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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