Journal of Crystal Growth, Vol.379, 69-72, 2013
Bridgman bulk growth and scintillation measurements of SrI2:Eu2+
Large diameter Bridgman growth of europium activated strontium iodide SrI2:Eu2+ produces crystals with light yield of up to 115,000 ph/MeV with an excellent light yield proportionality. SrI2:Eu2+ exhibits an outstanding energy resolution of better than 3% FWHM at 662 keV. Its emission is centered at 435 nm. The scintillation decays with a 1 mu s time constant for small samples and up to 5 mu s to larger crystals. This paper presents successful progress made in the vertical Bridgman crystal growth of SrI2:Eu2+ and its scintillator properties. Large diameter, crack-free and transparent SrI2:Eu(2+)single crystals with diameters of 1 in., 1.3 in., 1.5 in. and 2 in. were all successfully grown. (c) 2013 Elsevier B.V. All rights reserved.
Keywords:Single crystal growth;Bridgman technique;Growth from melt;Scintillator material;Large diameter scintillator crystals;SrI2:Eu