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The paper presents the results of potassium-lithium-borate glass containing copper
ions investigations. The glass was irradiated by 1.25 MeV gamma rays. The dose of radiation
was 360 Gy. The exciting of the irradiated glass at 360 nm led to the long-wavelength
photoluminescence band shift from 635 nm to 671 nm in comparison with non-irradiated
glass. A new luminescence band at 685 nm also appeared for excitation wavelength 405 nm in
the irradiated glass. It has been assumed that the luminescence band in glass at 671 nm -
685 nm corresponds to the luminescence of copper ions in the modified environment of the
first coordination sphere. Copper-containing luminescent structures in borate glass with the
luminescence maximum at 671-685 nm have been obtained for the first time. For the detailed
study of these luminescent centers properties, thorough study of the structural variations in the
gamma rays irradiated glass is required
Keywords: gamma ray radiation, cluster, copper, borate glass, photoluminescence |
full paper (pdf, 912 Kb)