Alpha/Beta Detector - Model 43-2-2
CE Seal
Specifications

INDICATED USE: alpha beta survey
SUGGESTED INSTRUMENTS: Ludlum Model 2224-1, Model 2360
CONNECTOR: series “C” (others available)
DETECTOR TYPE: ZnS(Ag) adhered to 0.25 (0.010 in.) thick plastic scintillation material
EFFICIENCY (4π): 25% of 239Pu; 20% of 90Sr/90Y; 5% of 14C
WINDOW: 1.2 mg/cm²
WINDOW AREA: 9.7 cm² (1.5 in²) active and open
BACKGROUND:
    alpha: 3 cpm or less
    beta: typically 50 cpm or less
CROSS TALK:
    alpha to beta: less than 10%
    beta to alpha: less than 1%
NON-UNIFORMITY: less than 10%
PHOTOMULTIPLIER TUBE: 3.8 cm (1.5 in.) diameter
OPERATING VOLTAGE: typically 500 to 1200 volts
CONSTRUCTION: aluminum housing with beige powder coat
TEMPERATURE RANGE: -20 to 50 °C (-4 to 122 °F)
SIZE: 5.1 X 18.5 cm (2 x 7.3 in.) (Dia x L)
WEIGHT: 0.5 kg (1 lb)