@article{oai:nifs-repository.repo.nii.ac.jp:00000375,
 author = {KATO,  Daiji and SAKAUE,  Hiroyuki A. and MURAKAMI,  Izumi and TANAKA,  Teruya and MUROGA,  Takeo and SAGARA,  Akio},
 issue = {S1},
 journal = {Plasma and Fusion Research},
 month = {May},
 note = {Ion-beam induced luminescence of sintered Er2O3 samples irradiated by Ar+ ion-beams was measured in a visible range. In this experiment, three emission bands were observed at 500-520, 540-570, and 640-690nm. The measured luminescence band at 640-690nm is resolved into Lorentzian Stark component having a ? 1012 Hz width in frequency. Center wavelengths of the Stark components agree with those of intra-4f transitions of Er3+ (4f11) ions situated at C2  symmetry cation sites in pure Er2O3. However, resonance broadening due to nearby Er3+ in the crystal accounts only 1% of the total width. Depopulation of the crystalline oxide in irradiated regions is inferred from decreasing intensity of the emission band at 640-690nm during continuous irradiation. The emission bands at 500-520 and 540-570nm still remained in heavily damaged samples look similar with those observed with a metallic Er target.},
 title = {Ion-Beam Induced Luminescence and Damage of Er 2 O 3},
 volume = {Vol.7},
 year = {2012}
}