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Radiation Protection Dosimetry 33:147-150 (1990)
© 1990 Oxford University Press
The Role of Annealing: Effect on CaSO4:Dy Phosphor with Manganese and Sodium Impurities
The effect of the annealing treatment on the CaSO4:Dy phosphor with Mn and Na impurities was studied at different annealing temperatures from 100 oC to 800 oC. Doping with or without impurity caused no difference in the properties for temperatures less than 400 oC. An annealing temperature greater than 400 oC brings a reduction in low temperature peak intensities of CaSO4:Dy with Na only. The high temperature peak intensities increase as the temperature increases from 400 oC to 600 oC. However, annealing at a temperature greater than 600 oC brings a drastic reduction in high temperature peak intensities as well as TL output.
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