Environmental Restoration Group

Ludlum Model 44-1
Ludlum Specifications
INDICATED USE: Beta detection
SCINTILLATOR: 1.7" diameter x 0.01" thick (4.3 x 0.03 cm) plastic scintillator
WINDOW: 1.2 mg/cm2
NON-UNIFORMITY: Less than 10%
OPERATING VOLTAGE: Typically 500 - 1200 volts
WINDOW AREA: 11.6 cm2 active and open
EFFICIENCY (4pi): 10% - 14C
BACKGROUND (10 R/hr): Typically 100 cpm
ENERGY RESPONSE: N/A
COMPATIBLE INSTRUMENTS: General purpose survey meters, ratemeters and scalers
SIZE: 2" diameter x 7.3" L (5.1 x 18.5 cm)
WEIGHT: 1 lb (0.5 kg)
PHOTOMULTIPLIER TUBE: 1.5"(3.8 cm) diameter
8809 Washington St. NE Suite 150
Albuquerque, NM 87113
Tel: (505) 298-4224
Fax: (505) 797-1404