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<p>Congruently-melting LYBO (Li<sub>6</sub>Y(BO<sub>3</sub>)<sub>3</sub>) crystal is promising as a kind of high-efficiency neutron scintillator due to its capability of hosting a high concentration of <sup>6</sup>Li isotope. In this work, a LYBO:Ce crystal was successfully grown in process of remelting-intermediate reduction-regrowth from initial bulk LYBO:Ce crystal enriched with isotope <sup>6</sup>Li, yielding improved optical quality with visibly lower density of scattering centers. The radioluminescence, decay curves, pulse height spectrum, and afterglow curve are present in comparison with the initial <sup>6</sup>LYBO:Ce crystal. The regrown <sup>6</sup>LYBO:Ce crystal sample exhibits higher scintillation detection efficiency, with a light yield of approximately 71% that of GS20 glass, shorter afterglow and a decay lifetime as short as ~ 28&#xa0;ns. The result provides a new perspective for developing high-efficiency LYBO:Ce scintillator for thermal neutron detection.</p>

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Neutron scintillation properties improvement of LYBO:Ce crystal grown from remelting and intermediate reduction

  • 期刊论文

  • 发表日期：

    2026年1月3日

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  • Jiawei Zhu,
  • Ling Peng,
  • Xunsheng Zhou,
  • Tao Li,
  • Guoliang Gong,
  • Cailin Wang

摘要

Congruently-melting LYBO (Li6Y(BO3)3) crystal is promising as a kind of high-efficiency neutron scintillator due to its capability of hosting a high concentration of 6Li isotope. In this work, a LYBO:Ce crystal was successfully grown in process of remelting-intermediate reduction-regrowth from initial bulk LYBO:Ce crystal enriched with isotope 6Li, yielding improved optical quality with visibly lower density of scattering centers. The radioluminescence, decay curves, pulse height spectrum, and afterglow curve are present in comparison with the initial 6LYBO:Ce crystal. The regrown 6LYBO:Ce crystal sample exhibits higher scintillation detection efficiency, with a light yield of approximately 71% that of GS20 glass, shorter afterglow and a decay lifetime as short as ~ 28 ns. The result provides a new perspective for developing high-efficiency LYBO:Ce scintillator for thermal neutron detection.