| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1686050 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2008 | 4 Pages |
Abstract
Luminescence of Al2O3 single crystals doped with Cr3+ (∼500 ppm) (ruby), non-irradiated and irradiated by 50-MeV electrons, has been studied in a wide range of excitation energy (3.75–20 eV) at 9 K and compared with the luminescence of irradiated undoped Al2O3. Irradiation of ruby by 50-Mev electrons (up to fluences of 2 × 1017 e/cm2) does not lead to any significant changes of Cr3+ related luminescence. The comparison of absorption spectra and the excitation spectra of different emissions has shown that the presence of Cr3+ ions strongly reduces the creation of F centers in Al2O3:Cr by 50-MeV electrons.
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Authors
V.N. Makhov, A. Lushchik, Ch.B. Lushchik, M. Kirm, E. Vasil’chenko, S. Vielhauer, V.V. Harutunyan, E. Aleksanyan,