TY - JOUR
T1 - Evaluation of Ce:SrAl2O4 crystalline scintillators
AU - Nakauchi, Daisuke
AU - Okada, Go
AU - Koshimizu, Masanori
AU - Yanagida, Takayuki
N1 - Funding Information:
This work was supported by a Grant in Aid for Scientific Research (A)- 26249147 from the Ministry of Education, Culture, Sports, Science and Technology of the Japanese government (MEXT) and partially by JST A-step. Green Photonics Research from MEXT is also acknowledged. It is also partially supported by the Murata Science Foundation , KRF foundation and a cooperative research project of the Research Institute of Electronics, Shizuoka University .
Publisher Copyright:
© 2016 Elsevier B.V. All rights reserved.
PY - 2016/6/15
Y1 - 2016/6/15
N2 - In this study, Ce-doped SrAl2O4 (Ce:SrAl2O4) crystals were prepared by a floating zone (FZ) method and experimental evaluations were performed for scintillator applications. In photoluminescence (PL) with an excitation around 320 nm, an intense broad emission peak appears around 380 nm due to the 5d-4f transitions. The PL decay time constants are approximately 30 ns. The X-ray induced scintillation spectrum also shows an intense broad emission peak around 380 nm. Among the samples evaluated with different concentrations of Ce, the absolute light yield under 137Cs is considerably high (∼3900 ph/MeV) when the concentration of Ce is 1.0%. In thermally stimulated luminescence (TSL) after X-ray irradiation, strong TSL glow peaks are observed at 110, 210 and 330 °C. The samples also shows optically stimulated luminescence (OSL) after X-ray irradiation, in which the emission appears around 380 nm due to the 5d-4f emission bands of Ce3+ while the samples is exposed to the stimulation light at 655 nm.
AB - In this study, Ce-doped SrAl2O4 (Ce:SrAl2O4) crystals were prepared by a floating zone (FZ) method and experimental evaluations were performed for scintillator applications. In photoluminescence (PL) with an excitation around 320 nm, an intense broad emission peak appears around 380 nm due to the 5d-4f transitions. The PL decay time constants are approximately 30 ns. The X-ray induced scintillation spectrum also shows an intense broad emission peak around 380 nm. Among the samples evaluated with different concentrations of Ce, the absolute light yield under 137Cs is considerably high (∼3900 ph/MeV) when the concentration of Ce is 1.0%. In thermally stimulated luminescence (TSL) after X-ray irradiation, strong TSL glow peaks are observed at 110, 210 and 330 °C. The samples also shows optically stimulated luminescence (OSL) after X-ray irradiation, in which the emission appears around 380 nm due to the 5d-4f emission bands of Ce3+ while the samples is exposed to the stimulation light at 655 nm.
KW - Cerium
KW - Optically stimulated luminescence
KW - Photoluminescence
KW - Scintillation
KW - Single crystal
KW - Strontium aluminate
KW - Thermally stimulated luminescence
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U2 - 10.1016/j.nimb.2016.04.017
DO - 10.1016/j.nimb.2016.04.017
M3 - Article
AN - SCOPUS:84964789125
SN - 0168-583X
VL - 377
SP - 89
EP - 93
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
ER -