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首页> 外文期刊>Journal of Crystal Growth >Crystal growth, Nd distribution and luminescence properties of (Na_(0.425+x)Lu_(0.575-x-y)Nd_y)F_(2015-2x)single crystals
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Crystal growth, Nd distribution and luminescence properties of (Na_(0.425+x)Lu_(0.575-x-y)Nd_y)F_(2015-2x)single crystals

机译：（Na_（0.425 + x）Lu_（0.575-x-y）Nd_y）F_（2015-2x）单晶的晶体生长，Nd分布和发光特性

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摘要

Na_(0.425+x)Lu_(0.575-x-y)Nd_y)F_(2015-2x) (x=0, y=0, 0.001, 0.01, 0.05, 0.1, 0.2; x= ± 0.01, 0.02, 0.05, y=0.05) single crystals were grown from the melt using the precise atmosphere control type Micro-Pulling-Down (μ-PD) method to examine their potential as a new VUV scintillators. The grown crystals were single-phase materials with fluorite type structure (Fm-3m, Z=4) as confirmed by XRD and had good crystallinity. The distribution of the crystal constituents in axial and radial directions was evaluated, and only negligible non-uniformity along growth axis was detected. The crystals demonstrated 70-90% transmittance above 176-188 nm wavelength and Nd3* 5d-4f luminescence (when exited by X-ray) observed around 185 nm. Both 5d-4f absorption and emission peaks shifted to longer wavelength region. The radioluminiscence measurements under 5.5 MeV oc-ray excitation ((241)~Am) demonstrated the light yield of 35-90 [Ph/5.5 MeV-α] and the decay time of 5.5-7.5 ns.
机译：Na_（0.425 + x）Lu_（0.575-xy）Nd_y）F_（2015-2x）（x = 0，y = 0，0.001，0.01，0.05，0.1，0.2; x =±0.01，0.02，0.05，y =使用精确的气氛控制型Micro-Pulling-Down（μ-PD）方法从熔体中生长出0.05％的单晶，以检验其作为新型VUV闪烁体的潜力。生长的晶体是X射线衍射证实的具有萤石型结构（Fm-3m，Z ＝ 4）的单相材料。评价晶体成分在轴向和径向上的分布，并且仅检测到沿生长轴的可忽略的不均匀性。晶体在176-188 nm波长以上具有70-90％的透射率，在185 nm附近观察到Nd3 * 5d-4f发光（当被X射线射出时）。 5d-4f吸收和发射峰均移至更长的波长区域。在5.5 MeV oc射线激发下（（241）〜Am）进行的放射性发光测量表明，光产率为35-90 [Ph / 5.5MeV-α]，衰减时间为5.5-7.5 ns。

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  • 来源
    《Journal of Crystal Growth》 |2011年第1期|p.791-795|共5页
  • 作者

    Yuki Furuya; Hidehiko Tanaka; Kentaro Fukuda; Noriaki Kawaguchi; Yuui Yokota; Takayuki Yanagida; Valery Chani; Martin Nikl; Akira Yoshikawa;

  • 作者单位

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan Research & Development Division, Tokuyama., Co. Ltd., ICR-building. Minamiyoshinari, Aoba-ku, Sendai, Japan;

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan Research & Development Division, Tokuyama., Co. Ltd., ICR-building. Minamiyoshinari, Aoba-ku, Sendai, Japan;

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;

    Institute of Physics, the Academy of Sciences of the Czech Republic, Cukrovamicka 10, 162 00 Prague 6, Czech Republic;

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan New Industry Creation Hatchery Center (NICHe), 6-6-10 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, 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. Radiation; A2. Single crystal growth; B1. Inorganic compound; B2. Scintillater materials; B3. Scintillators;

    机译：A1。辐射;A2。单晶生长;B1。无机化合物B2。闪烁体材料;B3。闪烁体;

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