Ludlum Model 44-7
Alpha, Beta, Gamma GM Detector
Part Number 47-1536
INDICATED USE: Alpha, beta, gamma survey; sample counting
DETECTOR: End window halogen quenched GM
WINDOW: 1.7 + 0.3 mg/cm2 mica
WINDOW AREA: 6 cm2 active; 5 cm2 open
EFFICIENCY (4pi): 2%-14C; 10%-90Sr/90Y; 7%-99Tc; 7%-239Pu
SENSITIVITY (137Cs gamma): 2100 cpm/mR/hr
ENERGY RESPONSE: Energy dependent
BACKGROUND: 40 cpm
DEAD TIME: 250 microseconds
OPERATING VOLTAGE: 900 volts
CONSTRUCTION: Anodized aluminum housing
SIZE: 1.8" diameter x 5.8" L (4.6 x 14.7 cm)
WEIGHT: 1 lb (0.5 kg)
Click Here to Download a Printable Information Sheet. (.pdf format)
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