SrI<sub>2</sub>∶Eu∶Cs晶体生长及闪烁性能

doi:10.11896/j.issn.1005-023X.2018.22.002

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Abstract Single crystals of SrI₂∶Eu∶Cs with sizes up to Φ25 mm×70 mm were successfully grew in evacuated quartz ampoules via the Bridgman technique using the domestic raw materials. A transparent and crackless 10 mm×10 mm×10 mm SrI₂∶Eu∶Cs single crystal was machined.The XRD results proved that the crystal was SrI₂ orthogonal phase and the space group was Pbca. Fluorescence spectra showed that the emission and excitation peaks of the crystals were at 440 nm and 419 nm, respectively, ascribed to 5d→4f transition of Eu²⁺. The X-ray excited emission spectra showed that SrI₂∶Eu∶Cs presented one peak at 440 nm. The decay time, under 370 nm excitation, was found to be about 1.3 μs. The energy resolutions was 5.5% under ¹³⁷Cs gamma rays. This crystal already satisfies some application needs.

Key words： vertical Bridgman method SrI₂∶Eu∶Cs decay time energy resolutions scintillator

Published: 21 December 2018

CLC number:

O78

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	Articles by authors
	ZHANG Luling
	WEI Qinhua
	QIN Laishun
	SHI Hongsheng

Cite this article:

ZHANG Luling,WEI Qinhua,QIN Laishun, et al. Crystal Growth and Scintillation Properties of SrI₂∶Eu∶Cs[J]. Materials Reports, 2018, 32(22): 3845-3847.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.22.002 OR http://www.mater-rep.com/EN/Y2018/V32/I22/3845

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