On-line measurement of gamma radiation-induced absorption in $A^{3+}$ -codoped PbWO$_{4}$: Mo crystals

The radiation hardness of the set of seven samples of Mo-doped PbWO /sub 4/ crystals (from 0 up to 10,000 ppm) and further codoped by Y, La, Nb, is investigated. With increasing Mo concentration above 1000 ppm radiation hardness increases. Codoping by Y, La can still decrease radiation-induced absor...

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Detalles Bibliográficos
Autores principales: Sulc, Miroslav, Bohácek, P, Kobayashi, M, Mikes, P, Nikl, Martin, Usuki, Y, Vognar, M
Lenguaje:eng
Publicado: 2005
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.1016/j.nima.2004.08.061
http://cds.cern.ch/record/912947
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author Sulc, Miroslav
Bohácek, P
Kobayashi, M
Mikes, P
Nikl, Martin
Usuki, Y
Vognar, M
author_facet Sulc, Miroslav
Bohácek, P
Kobayashi, M
Mikes, P
Nikl, Martin
Usuki, Y
Vognar, M
author_sort Sulc, Miroslav
collection CERN
description The radiation hardness of the set of seven samples of Mo-doped PbWO /sub 4/ crystals (from 0 up to 10,000 ppm) and further codoped by Y, La, Nb, is investigated. With increasing Mo concentration above 1000 ppm radiation hardness increases. Codoping by Y, La can still decrease radiation-induced absorption about several tens percent at least, while influence of Nb is not clear. Induced absorption increases with the dose rate, for dose rates higher than 0.35Gy/min it achieves saturation level. As it is planned to use PbWO/sub 4/ scintillating crystals at lower temperature in ALICE experiment in CERN, some measurements were performed at temperature-15 degrees C too. Induced absorption coefficient at low temperature is 2-4 times higher with respect to room temperature and kinetic of recovery processes gets slower.
id cern-912947
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2005
record_format invenio
spelling cern-9129472019-09-30T06:29:59Zdoi:10.1016/j.nima.2004.08.061http://cds.cern.ch/record/912947engSulc, MiroslavBohácek, PKobayashi, MMikes, PNikl, MartinUsuki, YVognar, MOn-line measurement of gamma radiation-induced absorption in $A^{3+}$ -codoped PbWO$_{4}$: Mo crystalsDetectors and Experimental TechniquesThe radiation hardness of the set of seven samples of Mo-doped PbWO /sub 4/ crystals (from 0 up to 10,000 ppm) and further codoped by Y, La, Nb, is investigated. With increasing Mo concentration above 1000 ppm radiation hardness increases. Codoping by Y, La can still decrease radiation-induced absorption about several tens percent at least, while influence of Nb is not clear. Induced absorption increases with the dose rate, for dose rates higher than 0.35Gy/min it achieves saturation level. As it is planned to use PbWO/sub 4/ scintillating crystals at lower temperature in ALICE experiment in CERN, some measurements were performed at temperature-15 degrees C too. Induced absorption coefficient at low temperature is 2-4 times higher with respect to room temperature and kinetic of recovery processes gets slower.oai:cds.cern.ch:9129472005
spellingShingle Detectors and Experimental Techniques
Sulc, Miroslav
Bohácek, P
Kobayashi, M
Mikes, P
Nikl, Martin
Usuki, Y
Vognar, M
On-line measurement of gamma radiation-induced absorption in $A^{3+}$ -codoped PbWO$_{4}$: Mo crystals
title On-line measurement of gamma radiation-induced absorption in $A^{3+}$ -codoped PbWO$_{4}$: Mo crystals
title_full On-line measurement of gamma radiation-induced absorption in $A^{3+}$ -codoped PbWO$_{4}$: Mo crystals
title_fullStr On-line measurement of gamma radiation-induced absorption in $A^{3+}$ -codoped PbWO$_{4}$: Mo crystals
title_full_unstemmed On-line measurement of gamma radiation-induced absorption in $A^{3+}$ -codoped PbWO$_{4}$: Mo crystals
title_short On-line measurement of gamma radiation-induced absorption in $A^{3+}$ -codoped PbWO$_{4}$: Mo crystals
title_sort on-line measurement of gamma radiation-induced absorption in $a^{3+}$ -codoped pbwo$_{4}$: mo crystals
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.1016/j.nima.2004.08.061
http://cds.cern.ch/record/912947
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