Funct. Mater. 2016; 23 (3): 473-477.
Strontium iodide: technology aspects of raw material choice and crystal growth
Institute for Scintillation Materials, STC "Institute for Single Crystals" National Academy of Sciences of Ukraine, 60 Nauky Ave., 61001 Kharkiv, Ukraine
The technological features of SrI2 crystals production are discussed in this paper. The main reasons of deterioration of the purity and quality of the crystals were identified. It is shown that anionic (OH-group) is the basic impurity significantly affecting the scintillation characteristics. Some methods for quality control of SrI2 raw materials and crystals were proposed. Raw materials with pH ≪ 3-4 are preferable for growing high-quality crystals with excellent scintillation parameters.
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