Model 44-142 Beta Scintillator

The Model 44-142 is a beta scintillator. With an active area of 100 cm², this detector is ideal for surveys for beta contamination.

Indicated Use Beta survey
Detector Type 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 0.76 mm (0.031 in.) thick stainless steel, 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.)
Efficiency (4π)
⁹⁹Tc: 20%
⁹⁰Sr/⁹⁰Y: 30%
¹⁴C: 4%
Typical Background (10 µR/hr field) 300 cpm or less
Detector Uniformity 10% or less from average reading
Gamma Sensitivity approx. 20 cpm per µR/hr (137Cs)
Dead Time typically 5 µs or less
Photomultiplier Tube 29 mm (1.125 in.) diameter; magnetically shielded
Operating Voltage typically 500 to 1200 V (1500 V max.)
Temperature Range -20 to 50 °C (-4 to 122 °F)
Environmental Rating IP rating of 63
Connector Series "C" (others available)
Construction Aluminum with beige powder coating
Size (H x W x L) 6.4 x 9.5 x 31.1 cm (2.5 x 3.8 x 12.3 in)
Weight 0.5 kg (1 lb)