Name: Ludlum Model 44-21 Beta-Gamma Detector
SKU: 1893
Availability: InStock

Indicated Use	Beta; Low-energy gamma detection
Detector Type	NaI(Tl) scintillator, 2.54 cm (1 in) dia. x 0.1 cm (0.04 in) thick, adhered to plastic scintillator, 0.03 cm (0.01 in) thick
Window	3.4 mg/cm²
Window Area	Active: 5.1 cm² (0.8 in²) Open: 5.1 cm² (0.8 in²)
Efficiency (4π)	¹⁴C: 4% ³²P: 28% ¹²⁵I: 38% ¹²⁹I: 19%
Typical Background (10 µR/hr field)	450 cpm
Non-Uniformity	< 10%
Photomultiplier Tube	3.8 cm (1.5 in) diameter
Operating Voltage	500 to 1200 V (typical)
Connector	Series “C” (others available)
Construction	Aluminum housing with beige powder coat
Size (D x L)	5.1 x 18.5 cm (2 x 7.3 in) with connector cap
Weight	0.5 kg (1 lb)

Additional information

Weight	2 lbs
Dimensions	12 × 6 × 6 in

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