Model 43-93 Alpha/Beta Scintillator

The Model 43-93 is a 100 cm² dual phosphor alpha/beta scintillator that is designed to be used for simultaneously counting alpha and beta contamination

Indicated Use Simultaneous alpha and beta survey
Detector Type ZnS(Ag) scintillator adhered to 0.25 mm (0.01 in) thick plastic scintillator
Window 1.2 mg/cm² metalized polyester
Window Area Active: 100 cm² (15.5 in2), Open: 88 cm² (13.6 in²)
Protective Screen

• 0.79 mm (0.031 in.) thick, 6.5 mm (0.26 in.) square openings, 88% open
• Outer Dimensions (L x W): 168 x 92 mm (6.6 x 3.6 in.)
• Tool-less removal for quick window replacements

Efficiency (4π)
⁹⁹Tc: 15%
⁹⁰Sr/⁹⁰Y: 20%
²³⁹Pu: 20%
Typical Background (10 µR/hr field)
Alpha: 3 cpm or less
Beta: 300 cpm or less
Cross Talk
Alpha to Beta: 10% or less
Beta to Alpha: 1% or less
Detector Uniformity 10% or less from average reading
Gamma Sensitivity 15 to 20 cpm per µR/hr (137Cs)
Photomultiplier Tube 29 mm (1.125 in.) diameter
Operating Voltage typically 500 to 1200 V (1500 V max.)
Temperature Range -20 to 50 °C (-4 to 122 °F)
Connector Series "C" (others available)
Construction Aluminum with beige powder coating
Size (H x W x L) 6.4 x 9.5 x 31 cm (2.5 x 3.8 x 12.3 in.)
Weight 0.45 kg (1.0 lb)