TY - JOUR
T1 - Growth and scintillation properties of Tl-doped CsI/KI/KCl ternary eutectics
AU - Takizawa, Yui
AU - Kamada, Kei
AU - Kutsuzawa, Naoko
AU - Jin Kim, Kyoung
AU - Yoshino, Masao
AU - Yamaji, Akihiro
AU - Kurosawa, Shunsuke
AU - Yokota, Yuui
AU - Sato, Hiroki
AU - Toyoda, Satoshi
AU - Ohashi, Yuji
AU - Hanada, Takashi
AU - Kochurikhin, Vladimir V.
AU - Yoshikawa, Akira
N1 - Funding Information:
This work was partially supported by JSPS KAKENHI, Grant No.19H00672, 17H06159, 18H01222, 19H00881, 19 K12626 and 20 K20488. In addition, authors would like to thank following persons for their support: Mr. Shigeru Otsuka and Mr. Masahiro Fukukawa at the University of Tokyo and the Nanotechnology Platform project by the Ministry of Education, Culture, Sports, Science and Technology of Japan. We also would like to thank Editage (www.editage.com) for English language editing.
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/11/1
Y1 - 2021/11/1
N2 - In this study, Tl:CsI/KI/KCl eutectic scintillators were grown using the Bridgman–Stockbarger method by unidirectional solidification. The eutectic phases were uniformly distributed in the transverse direction and were slightly aligned along the growth direction. The Tl:CsI scintillator phase was grown as a matrix, which was then used for creating optical waveguides of the scintillation light. The expected Tl+ emission peak was observed at 486 nm under X-ray excitation and cathodoluminescence; this was attributed to the self-trapped exciton perturbed by TI+ in Tl:CsI. The decay time of the Tl:CsI/KI/KCl eutectic was 313 ns, and its light output was estimated to be 22,000 photons/MeV.
AB - In this study, Tl:CsI/KI/KCl eutectic scintillators were grown using the Bridgman–Stockbarger method by unidirectional solidification. The eutectic phases were uniformly distributed in the transverse direction and were slightly aligned along the growth direction. The Tl:CsI scintillator phase was grown as a matrix, which was then used for creating optical waveguides of the scintillation light. The expected Tl+ emission peak was observed at 486 nm under X-ray excitation and cathodoluminescence; this was attributed to the self-trapped exciton perturbed by TI+ in Tl:CsI. The decay time of the Tl:CsI/KI/KCl eutectic was 313 ns, and its light output was estimated to be 22,000 photons/MeV.
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.2021.126287
DO - 10.1016/j.jcrysgro.2021.126287
M3 - Article
AN - SCOPUS:85113285179
SN - 0022-0248
VL - 573
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
M1 - 126287
ER -