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 journalArticlepeer-review


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 languageEnglish
Article number100224
JournalOptical Materials: X
Publication statusPublished - 2023 Feb


  • 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


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