TY - JOUR
T1 - Growth and scintillation properties of directionally solidified Ce:LaCl3/AECl2 (AE = Mg, Ca, Sr) eutectic Scintillators
AU - Kim, Kyoung Jin
AU - Kamada, Kei
AU - Murakami, Rikito
AU - Yoshino, Masao
AU - Kurosawa, Shunsuke
AU - Yamaji, Akihiro
AU - Shoji, Yasuhiro
AU - Kochurikhin, Vladimir V.
AU - Sato, Hiroki
AU - Toyoda, Satoshi
AU - Ohashi, Yuji
AU - Hanada, Takashi
AU - Yokota, Yuui
AU - Yoshikawa, Akira
N1 - Funding Information:
This work was partially supported by Japan Society for the Promotion of Science (JSPS) Grants-in-Aid for Scientific Research (KAKENHI) No. 19K12626 , 19H00672 , 17H06159 , 18H01222 , 19H00881 , and 20K20488 .
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/4/15
Y1 - 2022/4/15
N2 - Ce-doped LaCl3/AECl2 (AE = Mg, Ca, Sr) system eutectics were explored. Ce-doped LaCl3/ AECl2 (AE = Mg, Ca, Sr) eutectics were grown using the Bridgman–Stockbarger method in quartz ampoules. In the case of AE = Mg, Ca, eutectics with submicron-diameter phase-separated scintillator fibers (PSSFs) structure were observed. In the case of AE = Sr sample, a solid solution of La0.708Sr0.292Cl2.708 was observed. The plate sample from the grown eutectics has some transparency. The grown eutectic structure showed a mixture of rods and plates shape. This mixed structure was aligned with a length of around 100–400 μm. The Ce:LaCl3/CaCl2 eutectic showed 345 nm emission ascribed to Ce3+ 4f-5d transition under X-ray excitation. The Ce:LaCl3/CaCl2 sample resulted in the highest light output of 9,000 photon/MeV, which is comparable to the previously reported eutectic scintillator Ce:GdAlO3/α-Al2O3, 9500 photon/MeV. Scintillation decay time of the Ce:LaCl3/CaCl2 sample under 662 keV gamma-ray excitation was 26.8 ns (26%) and 282 ns (74%).
AB - Ce-doped LaCl3/AECl2 (AE = Mg, Ca, Sr) system eutectics were explored. Ce-doped LaCl3/ AECl2 (AE = Mg, Ca, Sr) eutectics were grown using the Bridgman–Stockbarger method in quartz ampoules. In the case of AE = Mg, Ca, eutectics with submicron-diameter phase-separated scintillator fibers (PSSFs) structure were observed. In the case of AE = Sr sample, a solid solution of La0.708Sr0.292Cl2.708 was observed. The plate sample from the grown eutectics has some transparency. The grown eutectic structure showed a mixture of rods and plates shape. This mixed structure was aligned with a length of around 100–400 μm. The Ce:LaCl3/CaCl2 eutectic showed 345 nm emission ascribed to Ce3+ 4f-5d transition under X-ray excitation. The Ce:LaCl3/CaCl2 sample resulted in the highest light output of 9,000 photon/MeV, which is comparable to the previously reported eutectic scintillator Ce:GdAlO3/α-Al2O3, 9500 photon/MeV. Scintillation decay time of the Ce:LaCl3/CaCl2 sample under 662 keV gamma-ray excitation was 26.8 ns (26%) and 282 ns (74%).
KW - A1. Eutectics
KW - A2. Bridgman technique
KW - B1. Halides
KW - B2. Scintillator materials
KW - B3. Scintillators
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U2 - 10.1016/j.jcrysgro.2022.126549
DO - 10.1016/j.jcrysgro.2022.126549
M3 - Article
AN - SCOPUS:85124286855
SN - 0022-0248
VL - 584
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
M1 - 126549
ER -