Ludlum Model 43-5 Alpha Scintillator

The Model 43-5 is a 50 cm² Alpha Scintillator that can be used with a several different instruments including survey meters, scalers, ratemeters, and alarm ratemeters. 

Indicated Use: Alpha survey
D: ZnS(Ag)
Window: Typically 0.8 mg/cm² aluminized mylar (1.2 mg/cm² recommended for outdoor use)
Window Area: Active - 76 cm²
                     Open - 50 cm²
Efficiency (4pi geometry): Typically 13% - Pu-239
Non-Uniformity: Less than 10%
Compatible Instruments: General purpose survey meters, ratemeters, and scalers
Tube: 1.5"(3.8cm) diameter magnetically shielded photomultiplier
Operating Voltage: Typically 500 - 1200 volts
Dynode String Resistance: 100 megohm
Connector: Series "C" (others available)
Construction: Aluminum housing with beige polyurethane enamel paint
Temperature Range: -4° F(-20° C) to 122° F(50° C)
May be certified for operation from -40° F(-40° C) to 150° F(65° C)
Size: 4"(10.2cm)H X 2.5"(6.4cm)W X 14"(35.6cm)L
Weight: 2 lb (0.9kg)                                       

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