Growth of Eu doped LiBr/BaBr2 eutectic and its thermal neutron response

Yui Takizawa; Kei Kamada; Masao Yoshino; Ryga Yajima; Kyoung Jin Kim; Rikito Murakami; Vladimir V. Kochurikhin; Akira Yoshikawa

doi:10.1016/j.omx.2022.100224

Growth of Eu doped LiBr/BaBr₂ eutectic and its thermal neutron response

Yui Takizawa, Kei Kamada, Masao Yoshino, Ryga Yajima, Kyoung Jin Kim, Rikito Murakami, Vladimir V. Kochurikhin, Akira Yoshikawa

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

Abstract

In this study, Eu:⁶LiBr/BaBr₂ with a high Li concentration was developed as a novel neutron scintillator. Here, an Eu-doped BaBr₂ phase acted as a scintillator and ⁶Li-containing LiBr phase acted as a neutron capturer. Eu:⁶LiBr/BaBr₂ eutectics were fabricated via the vertical Bridgman technique in quartz ampoules. The scintillation performance of Ce:⁶LiBr/LaBr₃ was measured using electron and neutron irradiation to evaluate its potential as a neutron scintillator. The grown Eu:⁶LiBr/BaBr₂ eutectic exhibited a lamellar eutectic structure and optical transparency as well as a 410 nm emission due to the Eu²⁺ 5d–4f transition. The light yield under thermal neutron excitation was estimated to be 5600 photons/neutrons. The scintillation decay time was 550 ns.

Original language	English
Article number	100224
Journal	Optical Materials: X
Volume	17
DOIs	https://doi.org/10.1016/j.omx.2022.100224
Publication status	Published - 2023 Feb

Keywords

Bridgman technique
Eutectics
Halides
Scintillator materials
Scintillators

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Spectroscopy
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Electrical and Electronic Engineering

Access to Document

10.1016/j.omx.2022.100224

Cite this

@article{59eded8940de45ee84c3fa49fad5008c,

title = "Growth of Eu doped LiBr/BaBr2 eutectic and its thermal neutron response",

abstract = "In this study, Eu:6LiBr/BaBr2 with a high Li concentration was developed as a novel neutron scintillator. Here, an Eu-doped BaBr2 phase acted as a scintillator and 6Li-containing LiBr phase acted as a neutron capturer. Eu:6LiBr/BaBr2 eutectics were fabricated via the vertical Bridgman technique in quartz ampoules. The scintillation performance of Ce:6LiBr/LaBr3 was measured using electron and neutron irradiation to evaluate its potential as a neutron scintillator. The grown Eu:6LiBr/BaBr2 eutectic exhibited a lamellar eutectic structure and optical transparency as well as a 410 nm emission due to the Eu2+ 5d–4f transition. The light yield under thermal neutron excitation was estimated to be 5600 photons/neutrons. The scintillation decay time was 550 ns.",

keywords = "Bridgman technique, Eutectics, Halides, Scintillator materials, Scintillators",

author = "Yui Takizawa and Kei Kamada and Masao Yoshino and Ryga Yajima and Kim, {Kyoung Jin} and Rikito Murakami 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 , 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",

year = "2023",

month = feb,

doi = "10.1016/j.omx.2022.100224",

language = "English",

volume = "17",

journal = "Optical Materials: X",

issn = "2590-1478",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Growth of Eu doped LiBr/BaBr2 eutectic and its thermal neutron response

AU - Takizawa, Yui

AU - Kamada, Kei

AU - Yoshino, Masao

AU - Yajima, Ryga

AU - Kim, Kyoung Jin

AU - Murakami, Rikito

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 , 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

PY - 2023/2

Y1 - 2023/2

N2 - In this study, Eu:6LiBr/BaBr2 with a high Li concentration was developed as a novel neutron scintillator. Here, an Eu-doped BaBr2 phase acted as a scintillator and 6Li-containing LiBr phase acted as a neutron capturer. Eu:6LiBr/BaBr2 eutectics were fabricated via the vertical Bridgman technique in quartz ampoules. The scintillation performance of Ce:6LiBr/LaBr3 was measured using electron and neutron irradiation to evaluate its potential as a neutron scintillator. The grown Eu:6LiBr/BaBr2 eutectic exhibited a lamellar eutectic structure and optical transparency as well as a 410 nm emission due to the Eu2+ 5d–4f transition. The light yield under thermal neutron excitation was estimated to be 5600 photons/neutrons. The scintillation decay time was 550 ns.

AB - In this study, Eu:6LiBr/BaBr2 with a high Li concentration was developed as a novel neutron scintillator. Here, an Eu-doped BaBr2 phase acted as a scintillator and 6Li-containing LiBr phase acted as a neutron capturer. Eu:6LiBr/BaBr2 eutectics were fabricated via the vertical Bridgman technique in quartz ampoules. The scintillation performance of Ce:6LiBr/LaBr3 was measured using electron and neutron irradiation to evaluate its potential as a neutron scintillator. The grown Eu:6LiBr/BaBr2 eutectic exhibited a lamellar eutectic structure and optical transparency as well as a 410 nm emission due to the Eu2+ 5d–4f transition. The light yield under thermal neutron excitation was estimated to be 5600 photons/neutrons. The scintillation decay time was 550 ns.

KW - Bridgman technique

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KW - Halides

KW - Scintillator materials

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