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Ce-concentration dependence in CaYAl_3O_7 single crystalline scintillators

机译：CAYAL_3O_7单晶闪烁体的CE浓度依赖性

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摘要

0-3% Ce-doped CaYAl3O7 single crystals were grown by the optical Floating Zone method, and the photo-luminescence and scintillation properties were measured. Except for the undoped sample, all the samples show photoluminescence and scintillation dominantly with a broad band around 380-520 nm due to the 5d-4f transitions of Ce3+. The decay curves are well-fitted by one or a sum of two exponential functions. The 1st and the 2nd components are due to the 5d-4f transition of Ce3+ and intrinsic luminescence in the host material, respectively. Suggested from the pulse height spectra under irradiation of gamma-rays from Cs-137, the 0.3% Ce-doped CaYAl3O7 sample shows the highest scintillation light yield of 5400 ph/MeV among the present samples. The energy response exhibits proportional relationship between channel number and radiation energy in the dynamic range of 22-1408 keV.
机译：通过光学浮区法生长0-3％Ce掺杂的Cayal3O7单晶，并测量光发光和闪烁性质。除了未掺杂的样品外，由于CE3 +的5D-4F过渡，所有样品均显示出显着的光致发光和闪烁，其宽带约为380-520nm。衰减曲线被一个或一和两个指数函数均匀。第1和第2组分分别是由于CE3 +的5D-4F转变和主体材料中的固有发光。从CS-137的γ射线照射下的脉冲高度光谱提出，0.3％Ce-掺杂的Cayal3O7样品显示出本样品中的5400 pH / MEV的最高闪烁光率。能量响应在22-1408keV的动态范围内呈现频道数和辐射能量之间的比例关系。

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  • 来源
    《Optical Materials》 |2020年第4期|109810.1-109810.6|共6页
  • 作者

    Igashira Kenta; Nakauchi Daisuke; Fujimoto Yutaka; Kato Takumi; Kawaguchi Noriaki; Yanagida Takayuki;

  • 作者单位

    Nara Inst Sci & Technol NAIST Div Mat Sci 8916-5 Takayama Ikoma Nara 6300192 Japan;

    Nara Inst Sci & Technol NAIST Div Mat Sci 8916-5 Takayama Ikoma Nara 6300192 Japan;

    Tohoku Univ Grad Sch Engn Dept Appl Chem Aoba Ku 6-6 Aramaki Sendai Miyagi 9808579 Japan;

    Nara Inst Sci & Technol NAIST Div Mat Sci 8916-5 Takayama Ikoma Nara 6300192 Japan;

    Nara Inst Sci & Technol NAIST Div Mat Sci 8916-5 Takayama Ikoma Nara 6300192 Japan;

    Nara Inst Sci & Technol NAIST Div Mat Sci 8916-5 Takayama Ikoma Nara 6300192 Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Scintillator; Single crystal; Melilite; CaYAl3O7; Cerium; Photoluminescence;

    机译：闪烁体;单晶;Melilite;Cayal3O7;铈;光致发光;

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