Ludlum Model 43-65 50 cm2 Alpha Scintillator (square)Ludlum Mode 43 65 APPLICATION: alpha radiation contamination survey RADIATION DETECTOR: ZnS(Ag) scintillator WINDOW: typically 0. 8 mg cm aluminized mylar (1. 2 mg cm recommended for outdoor use) WINDOW AREA: 63 cm active; 50 cm open EFFICIENCY: 17% 239Pu, 17% 230Th BACKGROUND: 3 cpm NON UNIFORMITY: < 10% COMPATIBLE INSTRUMENTS: general purpose survey meters, ratemeters and scalers OPERATING VOLTAGE: typically 500 1200 volts PHOTOMULTIPLIER TUBE: 1. 5

and all you get is a number

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TEMPERATURE RANGE: -4 to 122 °F (-20 to 50 °C)

These have some shielding around the detector to reduce background

TIMER: switch selectable divisions of 0

THRESHOLD: 30 mV ± 10 mV

DETECTOR: 30-45 mg/cm² stainless steel wall halogen quenched GM

(utilizing optional UD-730 magazine changer)

detector test etc

General Description

We usually have sampling heads for this detector in stock

Location 12B