Growth and scintillation properties of Ce doped 6LiBr/LaBr3 eutectic scintillator for neutron detection

Yui Takizawa; Kei Kamada; Masao Yoshino; Kyoung Jin Kim; Akihiro Yamaji; Shunsuke Kurosawa; Yuui Yokota; Hiroki Sato; Satoshi Toyoda; Yuji Ohashi; Takashi Hanada; Vladimir V. Kochurikhin; Akira Yoshikawa

doi:10.1016/j.nima.2022.166384

Growth and scintillation properties of Ce doped ⁶LiBr/LaBr₃ eutectic scintillator for neutron detection

Yui Takizawa, Kei Kamada, Masao Yoshino, Kyoung Jin Kim, Akihiro Yamaji, Shunsuke Kurosawa, Yuui Yokota, Hiroki Sato, Satoshi Toyoda, Yuji Ohashi, Takashi Hanada, Vladimir V. Kochurikhin, Akira Yoshikawa

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

In this study, Ce:⁶LiBr/LaBr₃ eutectic with a high Li concentration was developed as a novel thermal neutron scintillator. Ce served as an activator for the LaBr₃ phase, and Ce:⁶LiBr/LaBr₃ eutectics were grown via the vertical Bridgman method in quartz ampoules (inner diameter = 4 mm). In the eutectic, the ⁶LiBr phase worked as the neutron capture phase by the ⁶Li (n, a) ³H reaction, and Ce:LaBr₃ worked as the scintillator phase. The Ce:⁶LiBr/LaBr₃ eutectic exhibited a lamellar eutectic structure and optical transparency, as well as 350 and 380 nm emission due to Ce³⁺ 5d-4f transition. The light yield under neutrons excitation was estimated to be 74000 photons/neutron. The scintillation decay time was 18.7 ns.

Original language	English
Article number	166384
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	1028
DOIs	https://doi.org/10.1016/j.nima.2022.166384
Publication status	Published - 2022 Apr 1

Keywords

Eutectic
Neutron detection
Scintillator

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

Access to Document

10.1016/j.nima.2022.166384

Cite this

Takizawa, Y., Kamada, K., Yoshino, M., Kim, K. J., Yamaji, A., Kurosawa, S., Yokota, Y., Sato, H., Toyoda, S., Ohashi, Y., Hanada, T., Kochurikhin, V. V., & Yoshikawa, A. (2022). Growth and scintillation properties of Ce doped ⁶LiBr/LaBr₃ eutectic scintillator for neutron detection. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1028, [166384]. https://doi.org/10.1016/j.nima.2022.166384

Growth and scintillation properties of Ce doped ⁶LiBr/LaBr₃ eutectic scintillator for neutron detection. / Takizawa, Yui; Kamada, Kei ; Yoshino, Masao et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 1028, 166384, 01.04.2022.

Research output: Contribution to journal › Article › peer-review

Takizawa, Y, Kamada, K , Yoshino, M, Kim, KJ, Yamaji, A , Kurosawa, S , Yokota, Y , Sato, H , Toyoda, S , Ohashi, Y , Hanada, T, Kochurikhin, VV & Yoshikawa, A 2022, 'Growth and scintillation properties of Ce doped ⁶LiBr/LaBr₃ eutectic scintillator for neutron detection', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 1028, 166384. https://doi.org/10.1016/j.nima.2022.166384

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title = "Growth and scintillation properties of Ce doped 6LiBr/LaBr3 eutectic scintillator for neutron detection",

abstract = "In this study, Ce:6LiBr/LaBr3 eutectic with a high Li concentration was developed as a novel thermal neutron scintillator. Ce served as an activator for the LaBr3 phase, and Ce:6LiBr/LaBr3 eutectics were grown via the vertical Bridgman method in quartz ampoules (inner diameter = 4 mm). In the eutectic, the 6LiBr phase worked as the neutron capture phase by the 6Li (n, a) 3H reaction, and Ce:LaBr3 worked as the scintillator phase. The Ce:6LiBr/LaBr3 eutectic exhibited a lamellar eutectic structure and optical transparency, as well as 350 and 380 nm emission due to Ce3+ 5d-4f transition. The light yield under neutrons excitation was estimated to be 74000 photons/neutron. The scintillation decay time was 18.7 ns.",

keywords = "Eutectic, Neutron detection, Scintillator",

author = "Yui Takizawa and Kei Kamada and Masao Yoshino and Kim, {Kyoung Jin} and Akihiro Yamaji and Shunsuke Kurosawa and Yuui Yokota and Hiroki Sato and Satoshi Toyoda and Yuji Ohashi and Takashi Hanada and Kochurikhin, {Vladimir V.} and Akira Yoshikawa",

note = "Funding Information: This work was partially supported by KAKENHI, Japan Society for the Promotion of Science , grant numbers; 18H01222 , 19H00672 , 20K20488 , 17H06159 , 19H00881 , 19K12626 . 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: {\textcopyright} 2022 Elsevier B.V.",

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doi = "10.1016/j.nima.2022.166384",

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T1 - Growth and scintillation properties of Ce doped 6LiBr/LaBr3 eutectic scintillator for neutron detection

AU - Takizawa, Yui

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AU - Yoshino, Masao

AU - Kim, Kyoung Jin

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 KAKENHI, Japan Society for the Promotion of Science , grant numbers; 18H01222 , 19H00672 , 20K20488 , 17H06159 , 19H00881 , 19K12626 . 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: © 2022 Elsevier B.V.

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N2 - In this study, Ce:6LiBr/LaBr3 eutectic with a high Li concentration was developed as a novel thermal neutron scintillator. Ce served as an activator for the LaBr3 phase, and Ce:6LiBr/LaBr3 eutectics were grown via the vertical Bridgman method in quartz ampoules (inner diameter = 4 mm). In the eutectic, the 6LiBr phase worked as the neutron capture phase by the 6Li (n, a) 3H reaction, and Ce:LaBr3 worked as the scintillator phase. The Ce:6LiBr/LaBr3 eutectic exhibited a lamellar eutectic structure and optical transparency, as well as 350 and 380 nm emission due to Ce3+ 5d-4f transition. The light yield under neutrons excitation was estimated to be 74000 photons/neutron. The scintillation decay time was 18.7 ns.

AB - In this study, Ce:6LiBr/LaBr3 eutectic with a high Li concentration was developed as a novel thermal neutron scintillator. Ce served as an activator for the LaBr3 phase, and Ce:6LiBr/LaBr3 eutectics were grown via the vertical Bridgman method in quartz ampoules (inner diameter = 4 mm). In the eutectic, the 6LiBr phase worked as the neutron capture phase by the 6Li (n, a) 3H reaction, and Ce:LaBr3 worked as the scintillator phase. The Ce:6LiBr/LaBr3 eutectic exhibited a lamellar eutectic structure and optical transparency, as well as 350 and 380 nm emission due to Ce3+ 5d-4f transition. The light yield under neutrons excitation was estimated to be 74000 photons/neutron. The scintillation decay time was 18.7 ns.

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