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Basic radiation response properties of lithium aluminate LiAlO2 crystals activated with transition metals like Ti, Mn and Cu were examined. When X-ray excited the crystals, intense emission peaks were observed at visible wavelength regions, they are ascribed to the Ti4+ charge transfer (Ti-doped), Mn2+ 3d5-3d5 (Mn-doped) and Cu+ 3d94s-3d10 (Cu-doped) transitions. The scintillation decay times were...
Ce 0.1, 0.5, 1.0, and 2.0 mol%-doped crystals with 2 mm in diameter and 30–50 mm in length were grown by micro-pulling-down method. The photoluminescence spectra under ultraviolet excitation showed intense emission ascribed to 5d-4f transitions of replacing isolated octahedral site. In the radioluminescenced spectra under alpha-ray irradiation,...
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