Alpha Detector - Model 43-5
CE Seal
Specifications

INDICATED USE: alpha survey
SUGGESTED INSTRUMENTS: general purpose survey meters, ratemeters, and scalers
SCINTILLATOR: ZnS(Ag)
EFFICIENCY (4π): 13% for 239Pu
WINDOW: typically 0.8 mg/cm² metalized polyester (1.2 mg/cm²recommended for outdoor use)
WINDOW AREA: 76 cm²(11.9 in²) active, 50 cm² (7.8 in²) open
NON-UNIFORMITY: less than 10%
BACKGROUND: 3 cpm or less
PHOTOMULTIPLIER TUBE: 3.8 cm (1.5 in.) diameter
OPERATING VOLTAGE: typically 500–1200 volts
SIZE: 7.6 x 6.4 x 34.3 cm (3 x 2.5 x 13.5 in.) (H x W x L)
WEIGHT: 0.9 kg (2 lb)