INFLUENCE OF CRYSTALLIZATION CONDITIONS ON THE DISTRIBUTION OF THALLIUM IN SINGLE CRYSTALS OF SODIUM IODIDE
Journal Article
·
· Soviet Phys.-Cryst.
OSTI ID:4022098
The distribution of thallium concentration along the axis of single crystuls of NaI(Tl), grown by the Stockbarger method, is investigated. In the case where the convection mechanism of impurity transfer predominates, with curved isothermal surfaces in the melt, the theoretical formula, derived on the supposition of perfect mixing in the liquid phase, is satisfied. When there is a sharp limitation in the intensity of the convection currents in the liquid phase, the experimental datu agree with the theoretical curve for the case where diffusion is the only mechanism of impurity transfer. It is shown that the distribution of thallium concentration in the volume of scintillation crystals of NaI(Tl) can be controlled for the purpose of increasing the spectrometer properties of the crystals. (auth)
- Research Organization:
- All-Union Research Inst. of Chemical Reagents, Kharkov
- NSA Number:
- NSA-15-017433
- OSTI ID:
- 4022098
- Journal Information:
- Soviet Phys.-Cryst., Journal Name: Soviet Phys.-Cryst. Vol. Vol: 5
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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