Growth of 6Li-enriched LiCl/BaCl2eutectic as a novel neutron scintillator

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

doi:10.35848/1347-4065/ac481e

Growth of ⁶Li-enriched LiCl/BaCl₂eutectic as a novel neutron scintillator

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

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

5 Citations (Scopus)

Abstract

In this study, Eu:6LiCl/BaCl2 with a high Li concentration was developed as a novel thermal neutron scintillator. Eu ions were doped as activators for the BaCl2 phase, and Eu:6LiCl/BaCl2 eutectics were grown via the vertical Bridgman-Stockbarger method in quartz ampoules (inner diameter = 4 mm). The Eu:6LiCl/BaCl2 eutectic exhibited a lamellar eutectic structure and optical transparency. The 400 nm emission due to the Eu2+ 4f-5d transition was observed in the BaCl2 phase by a cathode luminescence measurement. The light yield under neutrons was estimated to be over 20 200 photons MeV-1. A PSD study was also performed using gamma and alpha-rays. The Eu:6LiCl/BaCl2 eutectic scintillator showed good potential for PSD.

Original language	English
Article number	SC1038
Journal	Japanese journal of applied physics
Volume	61
DOIs	https://doi.org/10.35848/1347-4065/ac481e
Publication status	Published - 2022

Keywords

eutectic
melt growth
neutron
scintillator

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.35848/1347-4065/ac481e

Cite this

@article{921c742407434d36931558787c922526,

title = "Growth of 6Li-enriched LiCl/BaCl2eutectic as a novel neutron scintillator",

abstract = "In this study, Eu:6LiCl/BaCl2 with a high Li concentration was developed as a novel thermal neutron scintillator. Eu ions were doped as activators for the BaCl2 phase, and Eu:6LiCl/BaCl2 eutectics were grown via the vertical Bridgman-Stockbarger method in quartz ampoules (inner diameter = 4 mm). The Eu:6LiCl/BaCl2 eutectic exhibited a lamellar eutectic structure and optical transparency. The 400 nm emission due to the Eu2+ 4f-5d transition was observed in the BaCl2 phase by a cathode luminescence measurement. The light yield under neutrons was estimated to be over 20 200 photons MeV-1. A PSD study was also performed using gamma and alpha-rays. The Eu:6LiCl/BaCl2 eutectic scintillator showed good potential for PSD. ",

keywords = "eutectic, melt growth, neutron, scintillator",

author = "Yui Takizawa and Kei Kamada and Masao Yoshino and Ryuga Yajima and Kim, {Kyoung Jin} and Kochurikhin, {Vladimir V.} and Akira Yoshikawa",

note = "Funding Information: This work was partially supported by JSPS KAKENHI, Grant No. 19H00672, 17H06159, 19K12626, 18H01222, 19H00881, 19K12626, and 20K20488. In addition, the authors would like to thank the following persons for their support on the CL measurements: 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 The Japan Society of Applied Physics.",

year = "2022",

doi = "10.35848/1347-4065/ac481e",

language = "English",

volume = "61",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

issn = "0021-4922",

publisher = "Japan Society of Applied Physics",

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TY - JOUR

T1 - Growth of 6Li-enriched LiCl/BaCl2eutectic as a novel neutron scintillator

AU - Takizawa, Yui

AU - Kamada, Kei

AU - Yoshino, Masao

AU - Yajima, Ryuga

AU - Kim, Kyoung Jin

AU - Kochurikhin, Vladimir V.

AU - Yoshikawa, Akira

N1 - Funding Information: This work was partially supported by JSPS KAKENHI, Grant No. 19H00672, 17H06159, 19K12626, 18H01222, 19H00881, 19K12626, and 20K20488. In addition, the authors would like to thank the following persons for their support on the CL measurements: 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 The Japan Society of Applied Physics.

PY - 2022

Y1 - 2022

N2 - In this study, Eu:6LiCl/BaCl2 with a high Li concentration was developed as a novel thermal neutron scintillator. Eu ions were doped as activators for the BaCl2 phase, and Eu:6LiCl/BaCl2 eutectics were grown via the vertical Bridgman-Stockbarger method in quartz ampoules (inner diameter = 4 mm). The Eu:6LiCl/BaCl2 eutectic exhibited a lamellar eutectic structure and optical transparency. The 400 nm emission due to the Eu2+ 4f-5d transition was observed in the BaCl2 phase by a cathode luminescence measurement. The light yield under neutrons was estimated to be over 20 200 photons MeV-1. A PSD study was also performed using gamma and alpha-rays. The Eu:6LiCl/BaCl2 eutectic scintillator showed good potential for PSD.

AB - In this study, Eu:6LiCl/BaCl2 with a high Li concentration was developed as a novel thermal neutron scintillator. Eu ions were doped as activators for the BaCl2 phase, and Eu:6LiCl/BaCl2 eutectics were grown via the vertical Bridgman-Stockbarger method in quartz ampoules (inner diameter = 4 mm). The Eu:6LiCl/BaCl2 eutectic exhibited a lamellar eutectic structure and optical transparency. The 400 nm emission due to the Eu2+ 4f-5d transition was observed in the BaCl2 phase by a cathode luminescence measurement. The light yield under neutrons was estimated to be over 20 200 photons MeV-1. A PSD study was also performed using gamma and alpha-rays. The Eu:6LiCl/BaCl2 eutectic scintillator showed good potential for PSD.

KW - eutectic

KW - melt growth

KW - neutron

KW - scintillator

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