TY - JOUR
T1 - The scintillation performance of one-inch diameter CsI/CsCl/NaCl eutectics grown by the Czochralski method
AU - Takizawa, Yui
AU - Kamada, Kei
AU - Kutsuzawa, Naoko
AU - Yoshino, Masao
AU - Yamamoto, Seiich
AU - Jin Kim, Kyoung
AU - Murakami, Rikito
AU - Kochurikhin, Vladimir V.
AU - Yoshikawa, Akira
N1 - Funding Information:
This work was partially supported by Japan Society for the Promotion of Science (JSPS) KAKENHI, Grant No. 19H00672 , 17H06159 , 18H01222 , 19H00881 , 19K12626 , 19K12626 , and 20K20488 . 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
PY - 2021/10/15
Y1 - 2021/10/15
N2 - In this study, one-inch diameter Tl:CsI/CsCl/NaCl eutectic scintillators were grown by the Czochralski method at various pulling rates. Crystal growth conditions such as rotation, pulling rates, and crystal growth setup were analyzed. By examining the structure of the obtained eutectic, the growth orientation of the CsI phase as well as the optimum pulling speed and rotation speed were found. A transparent eutectic plate of about 3 × 5 mm was prepared from the grown sample, and scintillation properties such as light output and decay time after excitation by 662 keV gamma-rays were evaluated. The performance was compared with the Tl: CsI single crystal standard. Furthermore, a β-ray imaging test was carried out by combining the eutectic plate and an electron-multiplied charge coupling device camera, and the position resolution as an imaging device was evaluated.
AB - In this study, one-inch diameter Tl:CsI/CsCl/NaCl eutectic scintillators were grown by the Czochralski method at various pulling rates. Crystal growth conditions such as rotation, pulling rates, and crystal growth setup were analyzed. By examining the structure of the obtained eutectic, the growth orientation of the CsI phase as well as the optimum pulling speed and rotation speed were found. A transparent eutectic plate of about 3 × 5 mm was prepared from the grown sample, and scintillation properties such as light output and decay time after excitation by 662 keV gamma-rays were evaluated. The performance was compared with the Tl: CsI single crystal standard. Furthermore, a β-ray imaging test was carried out by combining the eutectic plate and an electron-multiplied charge coupling device camera, and the position resolution as an imaging device was evaluated.
KW - A1. Eutectics
KW - A2. Czochralski method
KW - B1. Halides
KW - B2. Scintillator materials
KW - B3. Optical fiber devices
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U2 - 10.1016/j.jcrysgro.2021.126266
DO - 10.1016/j.jcrysgro.2021.126266
M3 - Article
AN - SCOPUS:85112264478
VL - 572
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
SN - 0022-0248
M1 - 126266
ER -