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Ce:Li6Y(BO3)3 (LYBO) is a well-known candidate for thermal neutron detection with a very high Li concentration (3.06 × 1022 /cm3). So far, as-grown crystals exhibit a milky appearance that compromises their performance as scintillators. Current work demonstrates for the first time the growth of scattering-free undoped and Ce-doped LYBO by a thermal quenching process. The origin and features of the scattering centers are investigated in detail. Furthermore, the annealing treatment for the scintillation activation is studied, finding that the reduction in oxygen vacancies is mandatory. Under thermal neutron irradiation, the annealed scattering-free Ce:LYBO single crystal achieves a record-high light yield of 6200 ph/n in a single decay with a lifetime as short as 24 ns.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: Scintillators, Single crystals, Li-borates, Neutron detection, Scattering centers

刊行年月日: 2024-01-01

出版者: IOP Publishing

掲載誌:

• Applied Physics Express (ISSN: 18820786) vol. 17 issue. 1 015502

研究助成金:

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.35848/1882-0786/ad1892

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更新時刻: 2024-08-21 16:30:28 +0900

MDRでの公開時刻: 2024-08-21 16:30:28 +0900