TY - JOUR
T1 - Crystal growth and scintillation properties of multi-component oxide single crystals
T2 - Ce:GGAG and Ce:La-GPS
AU - Yoshikawa, A.
AU - Kamada, K.
AU - Kurosawa, S.
AU - Shoji, Y.
AU - Yokota, Y.
AU - Chani, V. I.
AU - Nikl, M.
N1 - Funding Information:
This work is partially supported by (i) Japan Society for the Promotion of Science (JSPS) for Exploratory Research (AY) (Grant no. 25600130 ), (ii) the funding program for next generation researchers, JSPS (Grant no. LR008 ), (iii) Development of Systems and Technology for Advanced Measurement and Analysis, Japan Science and Technology Agency (JST) , (iv) Adaptable & Seamless Technology Transfer Program through R&D (A-STEP), JST , and (v) Supporting Industry program, Ministry of Economy, Trade and Industry (METI) (Grant no. 1407025 ). In addition, we would like to thank the following persons for their support: Mr. Yoshihiro Nakamura from Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University and Mr. Hiroshi Uemura, Ms. Keiko Toguchi, Ms. Megumi Sasaki, Ms. Yuka Takeda, and Ms. Kuniko Kawaguchi from IMR. Some part of this work was carried out under the collaboration program of Cooperative Research and Development Center for Advanced Materials (CRDAM), IMR, Tohoku. University. Authors thank Mr. Sugawara and Ms. Nomura from CRDAM.
PY - 2016/1
Y1 - 2016/1
N2 - Crystal growth by micro-pulling-down, Czochralski, and floating zone methods and scintillation properties of Ce:Gd3(Ga,Al)5O12 (Ce:GGAG) multi-component oxide garnets, and Ce:Gd2Si2O7 (Ce:GPS) or Ce:(La,Gd)2Si2O7 (Ce:La-GPS) pyro-silicates are reviewed. GGAG crystals demonstrated practically linear dependences of some of the parameters including lattice constant, emission wavelength, and band gap on Ga content. However, emission intensity, light yield and energy resolution showed maxima for intermediate compositions. GGAG crystals had the highest light yield of 56,000 photon/MeV for Ga content of 2.7 atoms per garnet formula unit. Similarly the light yield and energy resolution of La-GPS showed the highest values of 40,000 photon/MeV and 4.4%@662 keV, respectively, for La-GPS containing 10% of La. Moreover, La-GPS demonstrated stable scintillation performance up to 200°C.
AB - Crystal growth by micro-pulling-down, Czochralski, and floating zone methods and scintillation properties of Ce:Gd3(Ga,Al)5O12 (Ce:GGAG) multi-component oxide garnets, and Ce:Gd2Si2O7 (Ce:GPS) or Ce:(La,Gd)2Si2O7 (Ce:La-GPS) pyro-silicates are reviewed. GGAG crystals demonstrated practically linear dependences of some of the parameters including lattice constant, emission wavelength, and band gap on Ga content. However, emission intensity, light yield and energy resolution showed maxima for intermediate compositions. GGAG crystals had the highest light yield of 56,000 photon/MeV for Ga content of 2.7 atoms per garnet formula unit. Similarly the light yield and energy resolution of La-GPS showed the highest values of 40,000 photon/MeV and 4.4%@662 keV, respectively, for La-GPS containing 10% of La. Moreover, La-GPS demonstrated stable scintillation performance up to 200°C.
KW - Ce
KW - Luminescent materials
KW - Radioluminescence
KW - Scintillator
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U2 - 10.1016/j.jlumin.2015.04.001
DO - 10.1016/j.jlumin.2015.04.001
M3 - Article
AN - SCOPUS:84949108796
VL - 169
SP - 387
EP - 393
JO - Journal of Luminescence
JF - Journal of Luminescence
SN - 0022-2313
ER -