کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1494356 | 992906 | 2014 | 4 صفحه PDF | دانلود رایگان |
• We have grown several Eu concentration doped SrI2 single crystals by μ-PD Method.
• All diffraction peaks were ascribed to corresponding SrI2 plane indices.
• Luminescence originated from Eu2+ 5d–4f transition was observed near 435 nm.
• Eu 7.5%:SrI2 crystals showed maximum light-yield and minimum energy resolution.
Eu doped SrI2 (Eu:SrI2) single crystals with various Eu contents were grown by a modified micro-pulling-down (μ-PD) method and effects of Eu concentration on scintillation properties were investigated. Eu 1%, 5%, 7.5%, 10% and 15%:SrI2 single crystals were obtained and all as-grown crystals indicated high transparency without visible inclusion. Actual Eu contents in the grown crystals were almost same as nominal compositions. In the X-ray radioluminescence spectra, emission peaks around 435 nm were observed in all crystals. Eu7.5 mol%:SrI2 crystals indicated the highest light yield, 78,000 ph/MeV, and the smallest energy resolution, 3.7%.
Journal: Optical Materials - Volume 36, Issue 12, October 2014, Pages 1946–1949