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Optical properties and radiation hardness of Pr-doped Sol-Gel silica: influence of fiber drawing process
The optical emission from the 5d – 4f allowed transition of Pr3+ ions embedded in sol-gel silica is investigated for High Energy Physics applications requiring fast scintillating materials. A complete and detailed characterization of the optical, scintillation and radiation hardness properties of Pr...
Autores principales: | , , , , , , , , , , |
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Formato: | info:eu-repo/semantics/article |
Lenguaje: | eng |
Publicado: |
Journal of Luminescence
2017
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Materias: | |
Acceso en línea: | http://cds.cern.ch/record/2718469 |
_version_ | 1780965652318650368 |
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author | Fasoli, M. Cova, F. Moretti, F. Chiodini, N. Pauwels, K. Auffray-Hillemanns, E. Toliman Lucchini, M. Bourret, E. Veronese, I. d’Ippolito, E. Vedda, A. |
author_facet | Fasoli, M. Cova, F. Moretti, F. Chiodini, N. Pauwels, K. Auffray-Hillemanns, E. Toliman Lucchini, M. Bourret, E. Veronese, I. d’Ippolito, E. Vedda, A. |
author_sort | Fasoli, M. |
collection | CERN |
description | The optical emission from the 5d – 4f allowed transition of Pr3+ ions embedded in sol-gel silica is investigated for High Energy Physics applications requiring fast scintillating materials.
A complete and detailed characterization of the optical, scintillation and radiation hardness properties of Pr-doped silica is carried out employing different experimental techniques including steady-state and time-resolved photo-luminescence, radio- and thermo-luminescence, scintillation and optical absorption.
Optical absorption measurements, performed after X-ray irradiation sequences up to 1 kGy, evidence the formation of radiation-induced absorption bands related to point defects acting as color centers. Spontaneous partial recovery of the radiation-induced defects at room temperature, as well as after thermal treatments, is also disclosed.
Particular attention is paid to the comparison between bulk silica, both before and after a melting process, and fibers. The results reveal the presence of a lower concentration of optically active defects in melted glass. Such comparison highlights a role of the fiber drawing in modifying the glass defectiveness, consisting in the occurrence of a structural reorganization of the amorphous network during the process. |
format | info:eu-repo/semantics/article |
id | cern-2718469 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2017 |
publisher | Journal of Luminescence |
record_format | invenio |
spelling | cern-27184692020-05-19T18:54:30Z http://cds.cern.ch/record/2718469 eng Fasoli, M. Cova, F. Moretti, F. Chiodini, N. Pauwels, K. Auffray-Hillemanns, E. Toliman Lucchini, M. Bourret, E. Veronese, I. d’Ippolito, E. Vedda, A. Optical properties and radiation hardness of Pr-doped Sol-Gel silica: influence of fiber drawing process Detectors and Experimental Techniques 14: Infrastructure for advanced calorimeters The optical emission from the 5d – 4f allowed transition of Pr3+ ions embedded in sol-gel silica is investigated for High Energy Physics applications requiring fast scintillating materials. A complete and detailed characterization of the optical, scintillation and radiation hardness properties of Pr-doped silica is carried out employing different experimental techniques including steady-state and time-resolved photo-luminescence, radio- and thermo-luminescence, scintillation and optical absorption. Optical absorption measurements, performed after X-ray irradiation sequences up to 1 kGy, evidence the formation of radiation-induced absorption bands related to point defects acting as color centers. Spontaneous partial recovery of the radiation-induced defects at room temperature, as well as after thermal treatments, is also disclosed. Particular attention is paid to the comparison between bulk silica, both before and after a melting process, and fibers. The results reveal the presence of a lower concentration of optically active defects in melted glass. Such comparison highlights a role of the fiber drawing in modifying the glass defectiveness, consisting in the occurrence of a structural reorganization of the amorphous network during the process. info:eu-repo/grantAgreement/EC/FP7/654168 info:eu-repo/semantics/openAccess Education Level info:eu-repo/semantics/article http://cds.cern.ch/record/2718469 Journal of Luminescence Journal of Luminescence, (2017) pp. 661-667 2017 |
spellingShingle | Detectors and Experimental Techniques 14: Infrastructure for advanced calorimeters Fasoli, M. Cova, F. Moretti, F. Chiodini, N. Pauwels, K. Auffray-Hillemanns, E. Toliman Lucchini, M. Bourret, E. Veronese, I. d’Ippolito, E. Vedda, A. Optical properties and radiation hardness of Pr-doped Sol-Gel silica: influence of fiber drawing process |
title | Optical properties and radiation hardness of Pr-doped Sol-Gel silica: influence of fiber drawing process |
title_full | Optical properties and radiation hardness of Pr-doped Sol-Gel silica: influence of fiber drawing process |
title_fullStr | Optical properties and radiation hardness of Pr-doped Sol-Gel silica: influence of fiber drawing process |
title_full_unstemmed | Optical properties and radiation hardness of Pr-doped Sol-Gel silica: influence of fiber drawing process |
title_short | Optical properties and radiation hardness of Pr-doped Sol-Gel silica: influence of fiber drawing process |
title_sort | optical properties and radiation hardness of pr-doped sol-gel silica: influence of fiber drawing process |
topic | Detectors and Experimental Techniques 14: Infrastructure for advanced calorimeters |
url | http://cds.cern.ch/record/2718469 http://cds.cern.ch/record/2718469 |
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