公开(公告)号：EP1577263A1

公开(公告)日：2005-09-21

申请号：EP03741198.0

申请日：2003-07-04

申请人： TOKUYAMA CORPORATION

发明人： HAYASHI, Hirokatsu ,  FUKUNAGA, Kenji ,  FUKUDA, Kentaro

IPC分类号： C01B33/12 ,  C01B33/143 ,  B41M5/00 ,  B41J2/01

CPC分类号： C01B33/143 ,  B41M5/5218 ,  B41M5/5245 ,  C01P2004/50 ,  C01P2004/62 ,  C01P2004/80 ,  C01P2006/12

摘要： A silica cake formed of easily dispersible precipitated silica having small primary particle size is provided, from which highly transparent silica dispersion can be effectively obtained. This silica cake is characterized by being a cake of precipitated silica having BET specific surface area of at least 220 m 2 /g, and when it is dispersed in ion-exchange water to provide an aqueous dispersion of the silica of 5% by weight in concentration and further diluted to reduce the silica concentration to 1.5% by weight, the dispersion having a light-scattering index (n-value) of at least 2. This silica cake can be obtained by simultaneously adding an alkali silicate and a mineral acid to a reaction liquid whose pH is being maintained at a fixed value within a range of 7.5 - 11.5 and whose temperature is being maintained at not lower than 90°C, whereby forming precipitated silica through their reaction, and separating said precipitated silica from the reaction liquid in wet state.

公开(公告)号：EP2636647B1

公开(公告)日：2017-06-28

申请号：EP11838044.3

申请日：2011-11-01

申请人： Tokuyama Corporation ,  Tohoku University

发明人： FUKUDA, Kentaro ,  KAWAGUCHI, Noriaki ,  YOSHIKAWA, Akira ,  YANAGIDA, Takayuki ,  YOKOTA, Yui ,  FUJIMOTO, Yutaka

IPC分类号： C01F17/00 ,  C01D3/02 ,  C01F11/22 ,  C09K11/00 ,  C09K11/61 ,  G01T3/06 ,  G21K4/00 ,  C30B29/12 ,  C01D15/04 ,  C30B21/00 ,  C09K11/77

CPC分类号： C09K11/616 ,  C01D15/04 ,  C01F11/22 ,  C09K11/772 ,  C30B21/00 ,  C30B29/12 ,  G01T3/06 ,  G21K4/00 ,  G21K2004/06 ,  Y10T428/24975

公开(公告)号：EP3064965A1

公开(公告)日：2016-09-07

申请号：EP14857119.3

申请日：2014-10-28

申请人： Tokuyama Corporation

发明人： FUKUDA, Kentaro ,  SAITO, Hiroaki

IPC分类号： G01T3/06 ,  C09K11/00 ,  C09K11/08 ,  G01T1/20

CPC分类号： G01T3/06 ,  C09K11/02 ,  C09K11/7734 ,  G21K4/00

摘要： To provide a neutron detector having a high neutron counting accuracy whereby neutrons can be accurately measured even in a field with a high dose of γ-rays as background noise.
A neutron scintillator formed of a resin composition, said resin composition comprising an inorganic phosphor containing at least one kind of neutron-capturing isotope that is selected from lithium 6 and boron 10 such as Eu:LiCaAlF 6 and a resin, wherein the resin composition contains 0.2-30 ×10 18 atom/mm 3 of lithium 6 and 0.05-8 x10 18 atom/mm 3 of boron 10 and is in such a form that the average diameter of inscribed spheres is 5 mm or less; and a neutron scintillator formed of a resin-based composite, said resin-based composite comprising a plurality of parts formed of the aforesaid resin composition and supplementing part(s), in which the content of the neutron-capturing isotope is not more than 1/2 of the content of the neutron-capturing isotope in the resin composition, wherein the ratio of the distance between the centers of inscribed spheres in the individual parts formed of the resin composition to the sum of the diameters of the inscribed spheres therein is 1.2 or greater.

摘要翻译： 为了提供具有高中子计数精度的中子检测器，即使在具有高剂量的三射线作为背景噪声的场中也能够精确地测量中子。 一种由树脂组合物形成的中子闪烁器，所述树脂组合物包含含有选自锂6和硼10中的至少一种中子捕获同位素的无机磷光体，例如Eu：LiCaAlF 6和树脂，其中树脂组合物含有 0.2-30×10 18原子/ mm 3的锂6和0.05-8×10 18原子/ mm 3的硼10，并且是内接球的平均直径为5mm或更小的形式; 以及由树脂系复合体形成的中子闪烁体，所述树脂系复合体由上述树脂组合物和补充体形成的多个部分构成，其中中子捕获同位素的含量不大于1 / 2的树脂组合物中的中子捕获同位素的含量，其中由树脂组合物形成的各个部分中的内接球体的中心距离与其内接球体的直径之和的比率为1.2 或更大。

公开(公告)号：EP2256177B1

公开(公告)日：2016-01-13

申请号：EP09725054.2

申请日：2009-03-17

申请人： Tokuyama Corporation ,  Tohoku University

发明人： YOSHIKAWA, Akira ,  YANAGIDA, Takayuki ,  FUKUDA, Kentaro ,  ISHIZU, Sumito ,  KAWAGUCHI, Noriaki ,  SUYAMA, Toshihisa

IPC分类号： C09K11/61 ,  C09K11/00 ,  C09K11/85 ,  G01T1/20 ,  G01T1/202 ,  G01T3/06 ,  G21K4/00

CPC分类号： G01T3/06 ,  C09K11/645 ,  G21K4/00

公开(公告)号：EP2843088A1

公开(公告)日：2015-03-04

申请号：EP13782368.8

申请日：2013-04-18

申请人： Tokuyama Corporation ,  Tohoku University

发明人： ISHIZU, Sumito ,  FUKUDA, Kentaro ,  KAWAGUCHI, Noriaki ,  YOSHIKAWA, Akira ,  YANAGIDA, Takayuki ,  YOKOTA, Yui ,  FUJIMOTO, Yutaka

IPC分类号： C30B29/12 ,  C01F17/00 ,  C09K11/00 ,  C09K11/61 ,  G01T1/20 ,  G01T3/06

CPC分类号： C09K11/7733 ,  C30B15/08 ,  C30B29/12 ,  G01T3/06 ,  G21K4/00

摘要： [Object] To provide: a metal fluoride crystal which has a large amount of light emission; a method for producing the metal fluoride crystal; a light emitting element; a scintillator; and a method for detecting neutrons with use of the metal fluoride crystal.
[Solving Means] A light emitting element according to one embodiment of the present invention is configured of a metal fluoride crystal which is represented by chemical formula LiM 1 M 2 F 6 (wherein Li includes 6 Li; M 1 represents at least one alkaline earth metal element selected from among Mg, Ca, Sr and Ba; and M 2 represents at least one metal element selected from among Al, Ga and Sc), said metal fluoride crystal containing 0.02% by mole or more of Eu and having an Eu 2+ concentration of less than 0.01% by mole.

摘要翻译： 本发明的课题提供：一种金属氟化物晶体具有大的发光量的; 用于制造金属氟化物结晶的方法; 一个发光元件; 闪烁; 和用于在使用该金属氟化物结晶的检测中子的方法。 [解决手段]发光元件雅丁到本发明的一个实施例的光被配置成在金属氟化物结晶的所有这是由化学式的LiM 1 M 2 F 6代表（worin李包括的6 Li，M 1个darstellt至少一种碱土 选自Mg，Ca，Sr和Ba中选择的金属元素;和M 2 darstellt选自Al，Ga和Sc）中的至少一种金属元素，所述金属氟化物结晶含有12：02摩尔％或更多的Eu和具有与Eu 2 摩尔+小于0.01％的浓度。

公开(公告)号：EP2695928A1

公开(公告)日：2014-02-12

申请号：EP12768181.5

申请日：2012-04-02

申请人： Tokuyama Corporation ,  Tohoku University

发明人： FUKUDA, Kentaro ,  KAWAGUCHI, Noriaki ,  YOSHIKAWA, Akira ,  YANAGIDA, Takayuki ,  YOKOTA, Yui

IPC分类号： C09K11/64 ,  C09K11/00 ,  G01T1/20 ,  G01T1/202 ,  G01T3/06

CPC分类号： C09K11/7733 ,  C09K11/772 ,  C09K11/7732 ,  G01T1/2023 ,  G01T3/06 ,  G21K4/00

摘要： The present invention aims at providing a scintillator for high temperature environments which has satisfactory light emission characteristics under high temperature environments; and a method for measuring radiation under high temperature environments. The scintillator for high temperature environments comprises a colquiriite-type crystal represented by the chemical formula LiM 1 M 2 X 6 (where M 1 is at least one alkaline earth metal element selected from Mg, Ca, Sr and Ba, M 2 is at least one metal element selected from Al, Ga and Sc, and X is at least one halogen element selected from F, Cl, Br and I), for example, typified by LiCaAlF 6 , and the crystal optionally containing a lanthanoid element such as Ce or Eu. The method for measuring radiation under high temperature environments uses the scintillator.

摘要翻译： 本发明旨在提供一种在高温环境下具有令人满意的发光特性的高温环境的闪烁体; 以及在高温环境下测量辐射的方法。 用于高温环境的闪烁体包括由化学式LiM 1 M 2 X 6（其中M 1是至少一种选自Mg，Ca，Sr和Ba的碱土金属元素，M 2至少为1 一种选自Al，Ga和Sc的金属元素，X是选自F，Cl，Br和I中的至少一种卤素元素），例如以LiCaAlF 6为代表的晶体，以及任选地含有镧系元素如Ce或 欧洲联盟。 在高温环境下测量辐射的方法使用闪烁体。

公开(公告)号：EP2636772A1

公开(公告)日：2013-09-11

申请号：EP11838031.0

申请日：2011-11-01

申请人： Tokuyama Corporation ,  Tohoku University

发明人： ISHIZU, Sumito ,  FUKUDA, Kentaro ,  KAWAGUCHI, Noriaki ,  YOSHIKAWA, Akira ,  YANAGIDA, Takayuki ,  YOKOTA, Yui ,  FUJIMOTO, Yutaka

IPC分类号： C30B29/12 ,  C09K11/00 ,  C09K11/64 ,  G01T3/06

CPC分类号： G01T3/06 ,  C09K11/7721 ,  C30B15/00 ,  C30B15/08 ,  C30B29/12

摘要： [Problems to be Solved] A colquiriite-type crystal preferred for a scintillator for neutron detection, which has high sensitivity to neutron and which is reduced in background noise attributed to γ rays; a scintillator for neutron detection which comprises this crystal; and a neutron detector are provided.
[Means to Solve the Problems] A colquiriite-type crystal represented by the chemical formula LiM 1 M 2 X 6 , such as LiCaAlF 6 , containing Na and Ce, for example, the colquiriite-type crystal containing at least one alkali metal element selected from the group consisting of Na, K, Rb and Cs, and a lanthanoid element selected from the group consisting of Ce, Pr and Nd, and having an isotopic ratio of 6 Li of 20 mol% or more, preferably 50 mol% or more; a scintillator for neutron detection comprising the colquiriite-type crystal; and a neutron detector.

摘要翻译： [待解决的问题]优选用于中子检测的闪烁体的colquiriite型晶体，其对中子具有高灵敏度，并且由于³射线而降低背景噪声; 包含该晶体的中子检测用闪烁体; 并提供中子探测器。 解决问题的方法由含有Na和Ce的LiCaAlF 6等化学式LiM 1 M 2 X 6表示的扁桃体型晶体，例如含有至少一种选自碱金属元素的扁桃体型晶体 来自由Na，K，Rb和Cs组成的组和选自Ce，Pr和Nd的镧系元素，同位素比为6Li为20mol％以上，优选为50mol％以上 ; 一种用于中子检测的闪烁体，包括该共挤出型晶体; 和中子探测器。

公开(公告)号：EP2573590A1

公开(公告)日：2013-03-27

申请号：EP11783585.0

申请日：2011-05-18

申请人： Tokuyama Corporation ,  National University Corporation Nagoya University ,  Tohoku University

发明人： WATANABE, Kenichi ,  YAMAZAKI, Atsushi ,  URITANI, Akira ,  KONDO, Yoshiyuki ,  KAWAGUCHI, Noriaki ,  FUKUDA, Kentaro ,  SUYAMA, Toshihisa ,  YOSHIKAWA, Akira ,  YANAGIDA, Takayuki ,  YOKOTA, Yui ,  IGUCHI, Tetsuo

IPC分类号： G01T3/06 ,  C09K11/00 ,  C09K11/64 ,  G01T1/17 ,  G01T3/00

CPC分类号： G01T3/06 ,  C09K11/7734 ,  C30B15/00 ,  C30B29/12

摘要： Disclosed are: a neutron beam detector which comprises a material having low deliquescent properties and can discriminate between a neutron beam and a γ beam; a neutron beam detection scintillator; and a method for discriminating between a neutron beam and a γ beam. Specifically disclosed are: a neutron beam detection scintillator for use in the discrimination between a neutron beam and a γ beam based on the difference in waveforms of light detection signals, and which comprises Ce-containing LiCaAlF6 single crystals; a neutron beam detector which has a function of discriminating between a neutron beam and a γ beam based on the difference in waveforms of light detection signals from a neutron beam detection scintillator, and which is characterized by using a neutron beam detection scintillator comprising Ce-containing LiCaAlF6 single crystals as a neutron beam detection scintillator; and a method for discriminating between a neutron beam and a γ beam.

摘要翻译： 公开的是：中子束检测器，其包括具有低潮解性质并且可以中子束和光束³区分的材料; 中子束检测闪烁体; 和中子束和光束³区分的方法。 具体地说游离缺失盘是：用于在中子束和基于在光检测信号的波形的差的光束³之间的区分使用中子束检测闪烁体，并且其包含含Ce的LiCaAlF6单晶; 它是通过使用中子束检测闪烁体包括为特征的中子束检测器，它具有一个中子束并且基于来自中子束检测闪烁体中的光检测信号的波形的差的³光束之间进行鉴别的功能，并且所有含Ce LiCaAlF6晶体作为单个中子束检测闪烁体; 和中子束和光束³区分的方法。

公开(公告)号：EP2256177A1

公开(公告)日：2010-12-01

申请号：EP09725054.2

申请日：2009-03-17

申请人： Tokuyama Corporation ,  Tohoku University

发明人： YOSHIKAWA, Akira ,  YANAGIDA, Takayuki ,  FUKUDA, Kentaro ,  ISHIZU, Sumito ,  KAWAGUCHI, Noriaki ,  SUYAMA, Toshihisa

IPC分类号： C09K11/61 ,  C09K11/00 ,  C09K11/85 ,  G01T1/20 ,  G01T1/202 ,  G01T3/06

CPC分类号： G01T3/06 ,  C09K11/645 ,  G21K4/00

摘要： [Abstract] To provide a scintillator for neutron detection which has high sensitivity to neutron rays, and is reduced in a background noise attributed to γ rays.
[Means to Solve the Problems] A scintillator for neutron detection, comprising a metal fluoride crystal containing, as constituent elements, a metal having a valence of 2 or higher, such as calcium, aluminum or yttrium; lithium; and fluorine, the metal fluoride crystal containing 1.1 to 20 atoms per unit volume (atoms/nm 3 ) of 6 Li, having an effective atomic number of 10 to 40, containing a lanthanoid such as cerium, praseodymium or europium, and being represented by LiCaAlF 6 , LiSrAlF 6 , LiYF 4 , etc.

摘要翻译： [摘要]提供了对中子射线具有高灵敏度的中子检测用闪烁体，并且由于³射线引起的背景噪声降低。 解决问题的手段一种中子检测用闪烁体，其特征在于，含有金属氟化物晶体，作为构成元素，含有2价以上的金属如钙，铝或钇; 锂; 氟，氟原子结晶含有每单位体积（原子/ nm 3）为1〜20个原子的6Li，6L的有效原子序数为10〜40，含有铈，镨，铕等镧系元素，由 LiCaAlF 6，LiSrAlF 6，LiYF 4等

公开(公告)号：EP3272914A1

公开(公告)日：2018-01-24

申请号：EP16764721.3

申请日：2016-03-03

申请人： Tokuyama Corporation

发明人： ISHIZU, Sumito ,  FUKUDA, Kentaro ,  MATSUO, Kentaro

IPC分类号： C30B29/12 ,  G02B1/02

CPC分类号： G02B1/02 ,  C30B15/00 ,  C30B27/02 ,  C30B29/12 ,  G01N27/4074 ,  G01T1/2935

摘要： A lanthanum fluoride single crystal wherein an alkaline earth metal is added to the lanthanum fluoride single crystal, and internal transmittance of light at 9.3 µm in wavelength is no less than 85 %/mm. The lanthanum fluoride single crystal and an optical component which have high transparency in an infrared region, and can be preferably used for phase plates for lasers, lenses and optical window materials for laser beam machines, gas detectors, flame detectors, infrared cameras, and so on, etc. are provided.

摘要翻译： 在氟化镧单晶中添加碱土类金属而成的氟化镧单晶，波长9.3μm的光的内部透射率为85％/ mm以上。 氟化镧单晶和在红外区域具有高透明性的光学元件，可以优选用于激光用相位板，激光加工机用透镜，光学窗口材料，气体检测器，火焰检测器，红外线相机等 等等。