Scintillating and optical spectroscopy of Al2O3 : Ti for dark matter searches
In order to optimize sapphire as a cryogenic scintillation-phonon detector for dark matter, Al2 O3 : Ti crystals with different concentrations of doping have been studied using continuous X-ray excitation in the 30-300 K temperature range. Light yields vary by 20% for Ti concentrations between 10 an...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2009
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| _version_ | 1797061151527272448 |
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| author | Luca, M Coron, N Dujardin, C Kraus, H Mikhailik, V Verdier, M Di Stefano, P |
| author_facet | Luca, M Coron, N Dujardin, C Kraus, H Mikhailik, V Verdier, M Di Stefano, P |
| author_sort | Luca, M |
| collection | OXFORD |
| description | In order to optimize sapphire as a cryogenic scintillation-phonon detector for dark matter, Al2 O3 : Ti crystals with different concentrations of doping have been studied using continuous X-ray excitation in the 30-300 K temperature range. Light yields vary by 20% for Ti concentrations between 10 and 1000 ppm at room temperature; they roughly double as the crystals are cooled from room temperature to 45 K. From the analysis of the change in the X-ray luminescence spectra of Al2 O3 with the concentration of Ti, it is concluded that the well-known blue emission of Ti-doped Al2 O3 is due to the radiative decay of F-centers. Recommendations are given for improving the performance of Al2 O3 scintillators. © 2009 Elsevier B.V. All rights reserved. |
| first_indexed | 2024-03-06T20:26:57Z |
| format | Journal article |
| id | oxford-uuid:2fb9272b-f989-4ac6-b7ad-566bceb3bafc |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T20:26:57Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:2fb9272b-f989-4ac6-b7ad-566bceb3bafc2022-03-26T12:57:06ZScintillating and optical spectroscopy of Al2O3 : Ti for dark matter searchesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:2fb9272b-f989-4ac6-b7ad-566bceb3bafcEnglishSymplectic Elements at Oxford2009Luca, MCoron, NDujardin, CKraus, HMikhailik, VVerdier, MDi Stefano, PIn order to optimize sapphire as a cryogenic scintillation-phonon detector for dark matter, Al2 O3 : Ti crystals with different concentrations of doping have been studied using continuous X-ray excitation in the 30-300 K temperature range. Light yields vary by 20% for Ti concentrations between 10 and 1000 ppm at room temperature; they roughly double as the crystals are cooled from room temperature to 45 K. From the analysis of the change in the X-ray luminescence spectra of Al2 O3 with the concentration of Ti, it is concluded that the well-known blue emission of Ti-doped Al2 O3 is due to the radiative decay of F-centers. Recommendations are given for improving the performance of Al2 O3 scintillators. © 2009 Elsevier B.V. All rights reserved. |
| spellingShingle | Luca, M Coron, N Dujardin, C Kraus, H Mikhailik, V Verdier, M Di Stefano, P Scintillating and optical spectroscopy of Al2O3 : Ti for dark matter searches |
| title | Scintillating and optical spectroscopy of Al2O3 : Ti for dark matter searches |
| title_full | Scintillating and optical spectroscopy of Al2O3 : Ti for dark matter searches |
| title_fullStr | Scintillating and optical spectroscopy of Al2O3 : Ti for dark matter searches |
| title_full_unstemmed | Scintillating and optical spectroscopy of Al2O3 : Ti for dark matter searches |
| title_short | Scintillating and optical spectroscopy of Al2O3 : Ti for dark matter searches |
| title_sort | scintillating and optical spectroscopy of al2o3 ti for dark matter searches |
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