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High-temperature scintillation of alumina under 32MeV 63Cu5+ heavy-ion irradiation

Lederer, S. and Akhmadaliev, S. and von Borany, J. and Gütlich, E. and Lieberwirth, A. and Zimmermann, J. and Ensinger, W. (2015):
High-temperature scintillation of alumina under 32MeV 63Cu5+ heavy-ion irradiation.
In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, pp. 161-166, 359, ISSN 0168-583X,
[Online-Edition: http://dx.doi.org/10.1016/j.nimb.2015.07.131],
[Article]

Abstract

Polycrystalline alumina samples (alpha-Al2O3, purity: 99.8%) were irradiated with Cu-63(5+) ions of 32 MeV kinetic energy (approximate to 0.5 MeV/u) up to fluences of 10(14) ions/cm(2) 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. (C) 2015 Elsevier B.V. All rights reserved.

Item Type: Article
Erschienen: 2015
Creators: Lederer, S. and Akhmadaliev, S. and von Borany, J. and Gütlich, E. and Lieberwirth, A. and Zimmermann, J. and Ensinger, W.
Title: High-temperature scintillation of alumina under 32MeV 63Cu5+ heavy-ion irradiation
Language: English
Abstract:

Polycrystalline alumina samples (alpha-Al2O3, purity: 99.8%) were irradiated with Cu-63(5+) ions of 32 MeV kinetic energy (approximate to 0.5 MeV/u) up to fluences of 10(14) ions/cm(2) 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. (C) 2015 Elsevier B.V. All rights reserved.

Journal or Publication Title: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Volume: 359
Uncontrolled Keywords: Alumina, Heavy-ion irradiation, Scintillation yield decrease, High-temperature scintillation, Thermal annealing
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Material Analytics
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 01 Mar 2016 09:59
Official URL: http://dx.doi.org/10.1016/j.nimb.2015.07.131
Identification Number: doi:10.1016/j.nimb.2015.07.131
Funders: This work was supported by the German Federal Ministry of Education and Research (BMBF Grant No. 05P12RDRBJ).
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