Gamma Detector - Model 44-17
CE Seal
Specifications

INDICATED USE: 125I and low energy gamma survey
ENERGY RESPONSE: energy dependent
SUGGESTED INSTRUMENTS: general purpose survey meters, ratemeters, and scalers
OPERATING VOLTAGE: typically 500–1200 volts
SCINTILLATOR: 5.1 cm (2 in.) diameter 2 mm thick Nal(TI) crystal
ENTRY WINDOW: 43 mg/cm²
WINDOW AREA: 17.8 cm² active and open
BACKGROUND (10 µR/hr): < 1500 cpm
EFFICIENCY (4π): 41%– 125I (based on 129I efficiency of 22%)
SENSITIVITY: 2500 cpm/μR/hr (125I)
RECOMMENDED ENERGY RANGE: 10–200 keV
PHOTOMULTIPLIER TUBE: 5.1 cm (2.0 in.) diameter
SIZE: 6.7 x 22.9 cm (2.6 x 9 in.) (Dia x L)
WEIGHT: 0.7 kg (1.5 lb)