Abstract
Radiation-induced luminescence (RIL) produced by 10 keV O +, N + and Ar + irradiation at room temperature has been used to study energy transfer in titanium dioxide (TiO 2) targets. RIL spectra in the UV-visible region show numerous atomic lines and three bands. Two visible bands by crystalline defects and an UV band at 3.9 eV originating from radiation transitions between the Ti 3+ 3d and O 2− 2 s states in the TiO 2 crystal are observed. The experimental results suggest that the excitations were not mainly produced by transitions from the ground state to excited states but by cascade radiations from higher excited states.
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