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31. 发明公开

EP3040739A1 NEUTRON SCINTILLATOR AND NEUTRON DETECTOR 有权
标题翻译：中枢神经系统中枢神经系统
公开(公告)号：EP3040739A1
公开(公告)日：2016-07-06
申请号：EP14840072.4
申请日：2014-08-28
申请人： Tokuyama Corporation
发明人： FUKUDA, Kentaro , ISHIZU, Sumito , SAITO, Hiroaki
IPC分类号： G01T3/06 , C09K11/00 , C09K11/06 , C09K11/64 , C09K11/85
CPC分类号： G01T3/06 , C09K11/02 , C09K11/7733 , G21K4/00
摘要： [Object] To provide a neutron scintillator that is constituted of a resin composition including inorganic fluorescent substance particles and has an excellent neutron/γ ray discrimination ability even when an optical transparency of the resin composition is poor due to a discrepancy of refractive indices and the like and fluorescence due to neutrons cannot be taken out sufficiently.
[Solving Means] In a neutron scintillator constituted of a resin composition including a resin and inorganic fluorescent substance particles that include at least one type of neutron capture isotope selected from lithium-6 and boron-10, such as Eu: LiCaAlF6, the resin composition additionally includes a neutron-insensitive fluorescent substance having a different fluorescence property. Neutrons and γ rays can be discriminated using a difference in the fluorescence property such as a fluorescence lifetime and an emission wavelength between the case where neutrons enter and the case where γ rays enter.
摘要翻译：本发明提供一种由含有无机荧光物质的树脂组合物构成的中子闪烁体，即使当由于折射率的差异而导致树脂组合物的光学透明性差时，也具有优异的中子/³射识别能力，不能充分取出由于中子引起的像和荧光。 [解决方案]在由包括树脂的树脂组合物和包含选自如下的至少一种中子捕获同位素的无机荧光物质颗粒构成的中子闪烁体中，所述中子俘获同位素如Eu：LiCaAlF 6，所述树脂组合物还包括具有不同荧光特性的中子不敏感荧光物质。可以使用荧光性质的差异来区分中子和³射线，例如荧光寿命和中子进入的情况与³射线进入的情况之间的发射波长。

32. 发明授权

EP3153562B1 NEUTRON SCINTILLATOR AND NEUTRON DETECTOR 有权
公开(公告)号：EP3153562B1
公开(公告)日：2018-08-29
申请号：EP15807500.2
申请日：2015-06-08
申请人： Tokuyama Corporation
发明人： FUKUDA, Kentaro , YOSHIDA, Takahiro
IPC分类号： C09K11/02 , C09K11/61 , G01T3/06
CPC分类号： G01T3/06 , C09K11/02 , C09K11/7733 , C09K11/7773 , G01T1/20
摘要： A neutron scintillator excellent in neutron detection efficiency and n/³ discrimination ability, having uniform characteristics, and easily available in a large size is provided. The neutron scintillator comprises a resin composition having eutectic particles incorporated in a resin having a similar refractive index, the eutectic particles having a sphere equivalent diameter of the order of 50 to 1000 µm and being composed of lithium fluoride and an inorganic fluorescent material, such as MgF 2 , CaF 2 or SrF 2 , the inorganic fluorescent material containing a lanthanoid, such as Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm or Yb, as a luminescent center atom.

33. 发明公开

EP3064966A1 NEUTRON SCINTILLATOR, NEUTRON DETECTOR AND METHOD FOR MANUFACTURING NEUTRON SCINTILLATOR 审中-公开
标题翻译：中子闪烁体，中子探测器及制造中子闪烁体的方法
公开(公告)号：EP3064966A1
公开(公告)日：2016-09-07
申请号：EP14858453.5
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 , G21K2004/06 , G21K2004/08
摘要： [Problem] 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, said neutron detector being a neutron scintillator provided with a wavelength converting part comprising a wavelength converting fiber or a wavelength converting sheet for light collection. [Solution] A neutron scintillator formed of a resin-based composite, said resin-based composite comprising a phosphor part (A) formed of a resin composition comprising inorganic phosphor particles 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, and at least one wavelength converting part (B) comprising a wavelength converting fiber or a wavelength converting sheet. In the neutron scintillator, it is preferred that the wavelength converting part (B) is enclosed in the phosphor part (A).
摘要翻译：为了提供具有高中子计数精度的中子检测器，即使在高剂量的γ射线作为背景噪声的场中，也可以精确地测量中子，所述中子检测器是设置有波长转换部分的中子闪烁体包括用于光收集的波长转换光纤或波长转换片。一种由树脂基复合材料形成的中子闪烁体，所述树脂基复合材料包括由树脂组合物形成的磷光体部分（A），所述树脂组合物包含无机磷光体颗粒，所述无机磷光体颗粒包含至少一种中子俘获同位素，所述中子俘获同位素选自锂 6和硼10如Eu:LiCaAlF6和树脂，以及至少一个包含波长转换纤维或波长转换片的波长转换部分（B）。在中子闪烁体中，波长转换部分（B）优选包围在荧光体部分（A）中。

34. 发明公开

EP2933660A1 NEUTRON SCINTILLATOR, NEUTRON DETECTION METHOD, AND NEUTRON DETECTOR 审中-公开
标题翻译：中枢神经系统，中枢神经系统
公开(公告)号：EP2933660A1
公开(公告)日：2015-10-21
申请号：EP13862825.0
申请日：2013-12-11
申请人： Tokuyama Corporation
发明人： FUKUDA, Kentaro , KAWAGUCHI, Noriaki , ISHIZU, Sumito
IPC分类号： G01T3/06 , G01T1/20
CPC分类号： C09K11/7734 , C09K11/7721 , G01T3/06
摘要： A neutron scintillator composed of a resin composition comprising (A) an inorganic phosphor containing at least one neutron capture isotope selected from lithium 6 and boron 10 and (B) a resin, wherein
the inorganic phosphor is a particle having a specific surface area of 50 to 3,000 cm 2 /cm 3 , and the internal transmittance based on 1 cm of the optical path length of the resin composition is 30 %/cm or more at the emission wavelength of the inorganic phosphor.
摘要翻译：一种由树脂组合物构成的中子闪烁体，其包含（A）含有选自锂6和硼10的至少一种中子捕获同位素的无机荧光体和（B）树脂，其中无机荧光体是比表面积为50的颗粒至3,000cm 2 / cm 3，并且在无机磷光体的发射波长处，基于树脂组合物的光程长度的1cm的内部透射率为30％/ cm以上。

35. 发明授权

EP3040739B1 NEUTRON SCINTILLATOR AND NEUTRON DETECTOR 有权
公开(公告)号：EP3040739B1
公开(公告)日：2018-07-18
申请号：EP14840072.4
申请日：2014-08-28
申请人： Tokuyama Corporation
发明人： FUKUDA, Kentaro , ISHIZU, Sumito , SAITO, Hiroaki
IPC分类号： G01T3/06 , C09K11/64 , G21K4/00 , C09K11/02
CPC分类号： G01T3/06 , C09K11/02 , C09K11/7733 , G21K4/00
摘要： [Object] To provide a neutron scintillator that is constituted of a resin composition including inorganic fluorescent substance particles and has an excellent neutron/³ ray discrimination ability even when an optical transparency of the resin composition is poor due to a discrepancy of refractive indices and the like and fluorescence due to neutrons cannot be taken out sufficiently. [Solving Means] In a neutron scintillator constituted of a resin composition including a resin and inorganic fluorescent substance particles that include at least one type of neutron capture isotope selected from lithium-6 and boron-10, such as Eu: LiCaAlF6, the resin composition additionally includes a neutron-insensitive fluorescent substance having a different fluorescence property. Neutrons and ³ rays can be discriminated using a difference in the fluorescence property such as a fluorescence lifetime and an emission wavelength between the case where neutrons enter and the case where ³ rays enter.

36. 发明公开

EP1577263A1 CAKE OF EASILY DISPERSIBLE PRECIPITATED SILICA AND PROCESS FOR PRODUCING THE SAME 审中-公开
标题翻译： BLOCK由二氧化硅易拆卸降水及其制造方法
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.

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