Alpha Beta Gamma Detector - Model 44-7
CE Seal
Specifications

INDICATED USE: alpha, beta, gamma survey; sample counting
DETECTOR TYPE: end window, halogen-quenched GM
WINDOW: 1.7 ± 0.3 mg/cm² mica
WINDOW AREA: 6 cm² (0.93 in²) active; 5 cm² (0.78 in²) open
EFFICIENCY (4π): 2% for 14C; 10% for 90Sr/90Y; 7% for 99Tc; 7% for 239Pu; 0.1% for 125I
SENSITIVITY (137Cs gamma): 2100 cpm/mR/hr
ENERGY RESPONSE: energy dependent
BACKGROUND: 40 cpm
DEAD TIME: typically 200 microseconds
OPERATING VOLTAGE: 900 volts
CONSTRUCTION: anodized aluminum housing
SIZE: 4.6 x 14.7 cm (1.8 x 5.8 in.) (Dia x L)
WEIGHT: 0.5 kg (1 lb)