Model 44-172 YSO Scintillator


			PART NUMBER: 47-3543

	*The Ludlum Model 44-172 YSO (Yttrium Oxyorthosilicate) detector is used primarily for the detection of low-energy gamma radiation, from approximately 5 keV to 145 keV.* The Model 44-172 will also detect beta energy as low as 49 keV. The detector consists of a 1-inch diameter by 1-millimeter thick YSO scintillator. The window area is approximately 5 cm² and is constructed of 1.2 mg/cm² metalized mylar. *The Model 44-172 may be used with Ludlum instruments or equivalent instruments that can provide a voltage of 500 to1200 Vdc and an input sensitivity of approximately -35mV.*
		INDICATED USE: Detection of low-energy gamma radiation RECOMMENDED ENERGY RANGE OPERATION: 5keV to 145 keV SCINTILLATOR: 1” diameter by 1 mm thick YSO crystal (non-hygroscopic) EFFICIENCY (4pi geometry): Typically 25%- ¹²⁹I, 8%- ¹⁴C, 7%- ⁵⁵Fe, 10%- ⁵⁷Co, 11%- ²⁴¹Am WINDOW AREA: 5 cm² WINDOW DENSITY: 1.2 mg/cm² BACKGROUND: 300 cpm or less (in a 10 µR/hr field) INPUT SENSITIVITY: Typically -35mV PHOTOMULTIPLIER TUBE: 1.125” (2.9 cm) diameter, head-on type, magnetically shielded CONNECTOR: Standard series “C” (other types available upon request) SIZE: 2” (5.1 cm) diameter by 7”(17.8 cm) long CONSTRUCTION: Aluminum WEIGHT: 1 lb (0.5 kg) FINISH: Beige powdercoat

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