 Ludlum Model
43-2-2
Alpha Beta Radiation Scintillation Detector
 Introduction
The Ludlum Model
43-2-2 is a dual phosphor alpha beta radiation scintillation detector that is designed to be used for
simultaneously counting alpha and beta radiation contamination.
Specifications
PART NUMBER: 47-2003
INDICATED USE: Alpha beta radiation survey
RADIATION SCINTILLATOR: ZnS(Ag) adhered to 0.010" thick plastic scintillation material
WINDOW: Typically 0.8 mg/cm² aluminized mylar (1.2 mg/cm² recommended for outdoor use)
WINDOW AREA: Active and Open - 12 cm²
EFFICIENCY (4pi geometry): Typically 30% - 239Pu;
30% - 230Th; 20% - 90Sr/90Y;
5% - 14C
BACKGROUND:
Alpha - Less than 3 cpm
Beta - Typically 50 cpm or less (10 microR/hr field)
NON-UNIFORMITY: Less than 10%
CROSS TALK:
Alpha to Beta - Less than 10%
Beta to Alpha - Less than 1%
COMPATIBLE INSTRUMENTS:
Models 2224-1,
Model 2360
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: 2"(5.1cm) diameter X 7.3"(18.5cm)L
WEIGHT: 1 lb (0.5kg)
 This Product is CE Certified
Replacement Parts
Technical Information
Other Ludlum Products
Ludlum Information
For more information or to request a quotation,
please contact us
by phone at: (865)
947-5123 or by email at:
sales@deqtech.com.
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