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Radiation-induced luminescence from TiO2 by 10 keV O, N and Ar ion irradiation |
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| Authors: | Sin-iti Kitazawa Yuichi Saitoh Masaharu Asano |
| Affiliation: | a Naka Fusion Institute, Japan Atomic Energy Agency (JAEA), 801-1 Mukoyama, Naka, Ibaraki 311-0193, Japan b Nuclear Science Research Institute, Japan Atomic Energy Agency (JAEA), 2-4 Shirakata-Shirane, Tokai, Ibaraki 319-1195, Japan c Takasaki Advanced Radiation Research Institute, Japan Atomic Energy Agency (JAEA), 1233 Watanuki, Takasaki, Gunma 370-1292, Japan |
| 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 (TiO2) 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 Ti3+ 3d and O2− 2 s states in the TiO2 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. |
| Keywords: | Ion irradiation Optical emission spectroscopy Radiation-induced luminescence Titanium dioxide Thin film |
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