TY - GEN
T1 - TL, IRSL and phototransferred TL in beta-irradiated SrAl2O 4:Eu2+, Dy3+
AU - Chernov, V.
AU - Yen, W. M.
AU - Agúndez-Arvizu, Z.
AU - Meléndrez, R.
AU - Barboza-Flores, M.
PY - 2006
Y1 - 2006
N2 - The behavior of thermoluminescence (TL), optically stimulated luminescence (OSL) and phototransferred TL (PTTL) under thermal and/or optical stimulation in beta irradiated SrAl2O4:Eu2+, Dy3+ was investigated. The decay curve of the AG is described by a power law with exponent 1.5. The TL glow curve consists of three second kinetics order peaks with maxima at about 340, 430 and 550 K and an additional peak above 750 K. The AG decay during RT storage or under pre-heating correlates well with the decay of the 340 K TL glow peak indicating that the RT AG is mainly due to the thermal emptying of the traps responsible for the 340 K peak. The behaviour of the stimulated luminescence in beta irradiated SrAl2O4:Eu 2+, Dy3+ is explained by the transformation of Eu 2+ and Dy3+ to Eu3+ and Dy2+ due to irradiation and their converse transformation under thermal or infrared stimulation. The Eu2+ ions are the luminescent centres and the Dy2+ centers situated in two different Sr sites are the infrared sensitive traps responsible for the 340 and 430 K TL peaks and OSL.
AB - The behavior of thermoluminescence (TL), optically stimulated luminescence (OSL) and phototransferred TL (PTTL) under thermal and/or optical stimulation in beta irradiated SrAl2O4:Eu2+, Dy3+ was investigated. The decay curve of the AG is described by a power law with exponent 1.5. The TL glow curve consists of three second kinetics order peaks with maxima at about 340, 430 and 550 K and an additional peak above 750 K. The AG decay during RT storage or under pre-heating correlates well with the decay of the 340 K TL glow peak indicating that the RT AG is mainly due to the thermal emptying of the traps responsible for the 340 K peak. The behaviour of the stimulated luminescence in beta irradiated SrAl2O4:Eu 2+, Dy3+ is explained by the transformation of Eu 2+ and Dy3+ to Eu3+ and Dy2+ due to irradiation and their converse transformation under thermal or infrared stimulation. The Eu2+ ions are the luminescent centres and the Dy2+ centers situated in two different Sr sites are the infrared sensitive traps responsible for the 340 and 430 K TL peaks and OSL.
UR - http://www.scopus.com/inward/record.url?scp=52749093268&partnerID=8YFLogxK
M3 - Contribución a la conferencia
AN - SCOPUS:52749093268
SN - 1566775116
SN - 9781566775113
T3 - Proceedings - Electrochemical Society
SP - 231
EP - 248
BT - Dielectrics in Emerging Technologies -and- Persistent Phosphors, Joint Proceedings of the International Symposia
T2 - Dielectrics in Emerging Technologies -and- Persistent Phosphors - International Symposia
Y2 - 15 May 2005 through 20 May 2005
ER -