Model 44-88 Pancake G-M Probe

Cylindrical Detector for Contamination Survey

Indicated Use Alpha, beta, gamma survey; Sample counting
Detector Type Pancake type, halogen quenched GM
Window 1.7 ± 0.3 mg/cm² mica, protected by a stainless steel screen (79% open)
Window Area Active: 15 cm2 (2.3 in2)
Open: 12 cm² (1.9 in²)
Efficiency (4π)
¹⁴C: 5%
⁹⁰Sr/⁹⁰Y: 22%
⁹⁹Tc: 19%
³²P: 32%
²³⁹Pu: 15%
Typical Sensitivity (¹³⁷Cs gamma) 3300 cpm per mR/hr
Energy Response Energy dependent
Typical Background (10 µR/hr field) 60 cpm
Typical Dead Time 80 μs
Operating Voltage 900 V
Construction Aluminum housing with beige powder coat
Size (D x L) 5.9 x 7 cm (2.3 x 2.8 in.)
Weight 0.2 kg (0.5 lb)