| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8040538 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2015 | 6 Pages |
Abstract
Polycrystalline alumina samples (α-Al2O3, purity: 99.8%) were irradiated with 63Cu5+ ions of 32 MeV kinetic energy (â0.5 MeV/u) up to fluences of 1014 ions/cm2 at various temperatures ranging from 295 to 973 K. Ion beam induced luminescence and emission spectra were monitored at wavelengths from 320 to 800 nm. Optical absorption measurements were performed to deduce color center formation. Results were evaluated by the Birks model to determine the material's radiation hardness. The applicability of alumina as scintillation screens for ion beam diagnostics could be extended by enhanced temperature operation. Analysis of the emission spectra shows a complex color center formation behavior as a function of fluence and temperature.
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Authors
S. Lederer, S. Akhmadaliev, J. von Borany, E. Gütlich, A. Lieberwirth, J. Zimmermann, W. Ensinger,