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Phase-separated CsI-NaCl scintillator grown by the Czochralski method

机译:直拉法生长的相分离CsI-NaCl闪烁体

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摘要

A phase-separated CsI-NaCl scintillator with light-guiding properties was grown by the Czochralski method. The CsI-NaCl eutectic phase usually consists of NaCl cylinders in a CsI matrix and contains grain boundaries. However, we have grown composites without grain boundaries by creating a convex solid/ liquid interface, selecting a single grain by Dash's neck method, and increasing the diameter of the composite moderately. The good continuous convection flow required for these conditions was achieved by suppressing the drop in the aspect ratio of the melt height to the crucible radius with a double crucible setup. We successfully obtained a CsI-NaCl:Tl composite that was uniform with no grain boundaries greater than 30 mm in diameter.
机译:通过切克劳斯基方法生长具有导光特性的相分离的CsI-NaCl闪烁体。 CsI-NaCl共晶相通常由CsI基质中的NaCl圆柱体组成,并包含晶界。但是,我们通过创建凸的固/液界面,通过达什颈法选择单个晶粒并适度增加复合材料的直径来生长无晶粒边界的复合材料。通过使用双坩埚装置抑制熔体高度与坩埚半径的纵横比下降,可以实现这些条件所需的良好连续对流。我们成功地获得了均匀的CsI-NaCl:Tl复合材料,没有大于30 mm直径的晶界。

著录项

  • 来源
    《Journal of Crystal Growth》 |2014年第1期|7-12|共6页
  • 作者单位

    Frontier Research Center, Canon Inc., 30-2, Shimomaruko 3-chome, Ohta-ku, Tokyo, 146-8501, Japan;

    Frontier Research Center, Canon Inc., 30-2, Shimomaruko 3-chome, Ohta-ku, Tokyo, 146-8501, Japan;

    Frontier Research Center, Canon Inc., 30-2, Shimomaruko 3-chome, Ohta-ku, Tokyo, 146-8501, Japan;

    Frontier Research Center, Canon Inc., 30-2, Shimomaruko 3-chome, Ohta-ku, Tokyo, 146-8501, Japan;

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

    A1.Segregation; A2.Czochralski method; B1.Halides; B2.Phosphors; B3.Scintillators;

    机译:A1。隔离;A2.Czochralski方法;B1。卤化物;B2。荧光粉;B3。闪烁体;

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