Ludlum Model 43-89

  Alpha Beta Radiation Scintillation Detector - 100 cm²

Introduction

The Ludlum Model 43-89 is a 100 cm² dual phosphor alpha beta radiation scintillation detector that is designed to be used for simultaneously counting alpha and beta radiation contamination.

Specifications

PART NUMBER: 47-2430

INDICATED USE: Alpha beta radiation survey
RADIATION SCINTILLATOR: ZnS(Ag) adhered to 0.010"

thick plastic scintillation material
WINDOW: Typically 1.2 mg/cm² aluminized mylar
WINDOW AREA:
     Active - 125 cm²
     Open - 100 cm²
EFFICIENCY (4pi geometry): Typically 16% - ²³⁹Pu; 5% - ⁹⁹Tc; 16% - ⁹⁰S/⁹⁰Y
BACKGROUND:
     Alpha - Less than 3 cpm
     Beta - Typically 300 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: General purpose radiation survey meters, ratemeters, 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: 5.5"(13.9cm)H X 4"(10.2cm)W X 12.3"(33cm)L
WEIGHT: 1.5 lb (0.7kg)

This Product is CE Certified

Replacement Parts

• Mylar Window

• Protective Screen

• Photomultiplier Tube

• Scintillator

Technical Information

• Model 43-89 Data Sheet

• Model 43-89 Manual

• Model 43-89 CE Certificate

Other Ludlum Products

• Other Ludlum Products

Ludlum Information

• Ludlum Introduction

• Ludlum Resources

• Ludlum Warranty

• Ludlum Repair and Calibration

• Ludlum Training