Free carrier absorption in self-activated PbWO_4 and Ce-doped Y_3(Al_0.25Ga_0.75)_3O_12 and Gd_3Al_2Ga_3O_12 garnet scintillators

Nonequilibrium carrier dynamics in the scintillators prospective for fast timing in high energy physics and medical imaging applications was studied. The time-resolved free carrier absorption investigation was carried out to study the dynamics of nonequilibrium carriers in wide-band-gap scintillatio...

Descripción completa

Detalles Bibliográficos
Autores principales: Auffray, E., Korjik, M., M.T. Lucchini, S. Nargelas, O. Sidletskiy, G. Tamulaitis, Y. Tratsiak, A. Vaitkevičius
Formato: info:eu-repo/semantics/article
Lenguaje:eng
Publicado: Opt. Mater. 2016
Materias:
Detectors and Experimental Techniques
14: Infrastructure for advanced calorimeters
Acceso en línea:https://dx.doi.org/10.1016/j.optmat.2016.06.040
http://cds.cern.ch/record/2239269
_version_ 1780952965159321600
author Auffray, E.
Korjik, M.
M.T. Lucchini
S. Nargelas
O. Sidletskiy
G. Tamulaitis
Y. Tratsiak
A. Vaitkevičius
author_facet Auffray, E.
Korjik, M.
M.T. Lucchini
S. Nargelas
O. Sidletskiy
G. Tamulaitis
Y. Tratsiak
A. Vaitkevičius
author_sort Auffray, E.
collection CERN
description Nonequilibrium carrier dynamics in the scintillators prospective for fast timing in high energy physics and medical imaging applications was studied. The time-resolved free carrier absorption investigation was carried out to study the dynamics of nonequilibrium carriers in wide-band-gap scintillation materials: self-activated led tungstate (PbWO_4, PWO) ant two garnet crystals, GAGG:Ce and YAGG:Ce. It was shown that free electrons appear in the conduction band of PWO and YAGG:Ce crystals within a sub-picosecond time scale, while the free holes in GAGG:Ce appear due to delocalization from Gd^3+ ground states to the valence band within a few picoseconds after short-pulse excitation. The influence of Gd ions on the nonequilibrium carrier dynamics is discussed on the base of comparison the results of the free carrier absorption in GAGG:Ce containing gadolinium and in YAGG without Gd in the host lattice.
format info:eu-repo/semantics/article
id cern-2239269
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
publisher Opt. Mater.
record_format invenio
spelling cern-22392692019-09-30T06:29:59Z doi:10.1016/j.optmat.2016.06.040 http://cds.cern.ch/record/2239269 eng Auffray, E. Korjik, M. M.T. Lucchini S. Nargelas O. Sidletskiy G. Tamulaitis Y. Tratsiak A. Vaitkevičius Free carrier absorption in self-activated PbWO_4 and Ce-doped Y_3(Al_0.25Ga_0.75)_3O_12 and Gd_3Al_2Ga_3O_12 garnet scintillators Detectors and Experimental Techniques 14: Infrastructure for advanced calorimeters Nonequilibrium carrier dynamics in the scintillators prospective for fast timing in high energy physics and medical imaging applications was studied. The time-resolved free carrier absorption investigation was carried out to study the dynamics of nonequilibrium carriers in wide-band-gap scintillation materials: self-activated led tungstate (PbWO_4, PWO) ant two garnet crystals, GAGG:Ce and YAGG:Ce. It was shown that free electrons appear in the conduction band of PWO and YAGG:Ce crystals within a sub-picosecond time scale, while the free holes in GAGG:Ce appear due to delocalization from Gd^3+ ground states to the valence band within a few picoseconds after short-pulse excitation. The influence of Gd ions on the nonequilibrium carrier dynamics is discussed on the base of comparison the results of the free carrier absorption in GAGG:Ce containing gadolinium and in YAGG without Gd in the host lattice. info:eu-repo/grantAgreement/EC/FP7/654168 info:eu-repo/semantics/openAccess Education Level info:eu-repo/semantics/article http://cds.cern.ch/record/2239269 Opt. Mater. Opt. Mater., (2016) pp. 461-465 2016
spellingShingle Detectors and Experimental Techniques
14: Infrastructure for advanced calorimeters
Auffray, E.
Korjik, M.
M.T. Lucchini
S. Nargelas
O. Sidletskiy
G. Tamulaitis
Y. Tratsiak
A. Vaitkevičius
Free carrier absorption in self-activated PbWO_4 and Ce-doped Y_3(Al_0.25Ga_0.75)_3O_12 and Gd_3Al_2Ga_3O_12 garnet scintillators
title Free carrier absorption in self-activated PbWO_4 and Ce-doped Y_3(Al_0.25Ga_0.75)_3O_12 and Gd_3Al_2Ga_3O_12 garnet scintillators
title_full Free carrier absorption in self-activated PbWO_4 and Ce-doped Y_3(Al_0.25Ga_0.75)_3O_12 and Gd_3Al_2Ga_3O_12 garnet scintillators
title_fullStr Free carrier absorption in self-activated PbWO_4 and Ce-doped Y_3(Al_0.25Ga_0.75)_3O_12 and Gd_3Al_2Ga_3O_12 garnet scintillators
title_full_unstemmed Free carrier absorption in self-activated PbWO_4 and Ce-doped Y_3(Al_0.25Ga_0.75)_3O_12 and Gd_3Al_2Ga_3O_12 garnet scintillators
title_short Free carrier absorption in self-activated PbWO_4 and Ce-doped Y_3(Al_0.25Ga_0.75)_3O_12 and Gd_3Al_2Ga_3O_12 garnet scintillators
title_sort free carrier absorption in self-activated pbwo_4 and ce-doped y_3(al_0.25ga_0.75)_3o_12 and gd_3al_2ga_3o_12 garnet scintillators
topic Detectors and Experimental Techniques
14: Infrastructure for advanced calorimeters
url https://dx.doi.org/10.1016/j.optmat.2016.06.040
http://cds.cern.ch/record/2239269
http://cds.cern.ch/record/2239269
work_keys_str_mv AT auffraye freecarrierabsorptioninselfactivatedpbwo4andcedopedy3al025ga0753o12andgd3al2ga3o12garnetscintillators
AT korjikm freecarrierabsorptioninselfactivatedpbwo4andcedopedy3al025ga0753o12andgd3al2ga3o12garnetscintillators
AT mtlucchini freecarrierabsorptioninselfactivatedpbwo4andcedopedy3al025ga0753o12andgd3al2ga3o12garnetscintillators
AT snargelas freecarrierabsorptioninselfactivatedpbwo4andcedopedy3al025ga0753o12andgd3al2ga3o12garnetscintillators
AT osidletskiy freecarrierabsorptioninselfactivatedpbwo4andcedopedy3al025ga0753o12andgd3al2ga3o12garnetscintillators
AT gtamulaitis freecarrierabsorptioninselfactivatedpbwo4andcedopedy3al025ga0753o12andgd3al2ga3o12garnetscintillators
AT ytratsiak freecarrierabsorptioninselfactivatedpbwo4andcedopedy3al025ga0753o12andgd3al2ga3o12garnetscintillators
AT avaitkevicius freecarrierabsorptioninselfactivatedpbwo4andcedopedy3al025ga0753o12andgd3al2ga3o12garnetscintillators

Ejemplares similares