Alpha/Beta Sample Counter Head - Model 43-78-2
CE Seal
Specifications

INDICATED USE: large sample alpha/beta counting
SUGGESTED INSTRUMENTS: Models 2929, 3030E
SAMPLE SIZE (Maximum): 7.6 x 0.46 cm (3 x 0.18 in.) (Dia x L)
SHIELDING: 1.9 cm (0.75 in.) thick lead
SCINTILLATOR: ZnS (Ag) adhered to plastic scintillation disk
PHOTOMULTIPLIER TUBE: 7.6 cm (3 in.) diameter
HIGH VOLTAGE: nominally 800 to 1200 volts
WINDOW: 0.4 mg/cm²
EFFICIENCY (4π): 37% for 239Pu; 37% for 90Sr/90Y
BACKGROUND: Alpha: 7 counts per 10 minutes; beta 100 cpm or less
SIZE: 15.2 x 29 cm (6.0 x 11.4 in.) (Dia x L)
WEIGHT: 32 kg (70 lb)