Abstract
The present paper reports the excitation and emission spectra of sodium iodide phosphor in three different physical conditions namely (i) as-received powder form, (ii) thermally treated NaI powder condition and (iii) NaI tableted condition. The fluorescence spectra have been recorded by means of Aminco-Bowman spectrophoto-fluorometer supplied by American Instrument Co. Inc. The examination of fluorescence spectra in different physical conditions of NaI phosphor reveals the fact that fluorescence spectra are found significantly influenced by pretreatments. It is presumed that the change in density of vacancy, vacancy pair and dislocation in lattice of NaI on application of pre-treatments is responsible for the observed change in fluorescence spectra of NaI in different physical conditions.
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References
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Joshi, T.R., Nehate, A.K., Taher, M. et al. Thermally and deformation induced fluorescence in sodium iodide. Acta Physica Hungarica 71, 143–148 (1992). https://doi.org/10.1007/BF03054271
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DOI: https://doi.org/10.1007/BF03054271