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    NEUTRON DETECTION DEVICE
    3.
    发明申请
    NEUTRON DETECTION DEVICE 审中-公开
    中子检测装置

    公开(公告)号：US20130320217A1

    公开(公告)日：2013-12-05

    申请号：US13985963

    申请日：2012-03-08

    申请人： Noriaki Kawaguchi ,  Kentaro Fukuda ,  Toshihisa Suyama ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota ,  Yutaka Fujimoto

    发明人： Noriaki Kawaguchi ,  Kentaro Fukuda ,  Toshihisa Suyama ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota ,  Yutaka Fujimoto

    IPC分类号： G01T3/06

    CPC分类号： G01T3/06 ,  C09K11/7733 ,  C09K11/7734 ,  C30B15/00 ,  C30B29/12 ,  G21K4/00

    摘要： The present invention is a neutron detection device comprising a neutron detection scintillator composed of a colquiriite-type fluoride single crystal, and a silicon photodiode, characterized in that the single crystal contains only Eu as a lanthanoid and contains 0.80 atom/nm3 or more of 6Li, the content of Eu is 0.0025 to 0.05 mol %, and the thickness of the scintillator exceeds 1 mm. The present invention provides a neutron detection device which has a sufficiently high neutron detection efficiency, is equipped with a neutron detection unit minimally affected by gamma rays, and is compact as a whole and lightweight.

    摘要翻译： 本发明是一种中子检测装置，其特征在于，包括由阴离子型氟化物单晶构成的中子检测用闪烁体和硅光电二极管，其特征在于，所述单晶仅含有作为镧系元素的Eu，并含有0.30原子/ nm 3以上的6Li ，Eu的含量为0.0025〜0.05摩尔％，闪烁体的厚度超过1mm。 本发明提供了具有足够高的中子检测效率的中子检测装置，其具有最少受伽马射线影响的中子检测单元，并且整体紧凑且重量轻。

    RADIATION DETECTOR
    4.
    发明申请
    RADIATION DETECTOR 审中-公开
    辐射探测器

    公开(公告)号：US20130105707A1

    公开(公告)日：2013-05-02

    申请号：US13809460

    申请日：2011-07-20

    申请人： Hiromitsu Takahashi ,  Mitsuo Yonetani ,  Masayuki Matsuoka ,  Yasushi Fukazawa ,  Noriaki Kawaguchi ,  Kentaro Fukuda ,  Toshihisa Suyama ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota ,  Yutaka Fujimoto

    发明人： Hiromitsu Takahashi ,  Mitsuo Yonetani ,  Masayuki Matsuoka ,  Yasushi Fukazawa ,  Noriaki Kawaguchi ,  Kentaro Fukuda ,  Toshihisa Suyama ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota ,  Yutaka Fujimoto

    IPC分类号： H01L31/0232

    CPC分类号： H01L31/02322 ,  C09K11/06 ,  C09K11/7734 ,  C30B15/00 ,  C30B15/08 ,  C30B29/12 ,  G01T1/2018

    摘要： [Problems to be Solved] A radiation detector, which is improved in the detection efficiency of a photodetector for light emitted by a scintillator, which has excellent long-term operational stability, and which is excellent in time resolution and count rate characteristics, is provided with the use of the scintillator with a short fluorescence lifetime.[Means to Solve the Problems] A radiation detector is constructed by installing an optical wavelength conversion layer, which is composed of, for example, an organic fluorescent substance using polyvinyltoluene as a base material, between a scintillator composed of a fluoride single crystal, such as a Ce-containing LiCaAlF6 crystal, and a photodetector having a light entrance window material composed of a transparent glass material such as borosilicate glass. In the radiation detector, the peak wavelength of light emitted by the scintillator is 360 nm or less, and the peak wavelength of light after conversion by the optical conversion layer is 400 nm or more. Preferably, the refractive indexes of the scintillator and the optical wavelength conversion layer are both 1.35 to 1.65.

    摘要翻译： [待解决的问题]提供了具有优异的长期操作稳定性并且具有优异的时间分辨率和计数率特性的用于由闪烁体发出的光的光检测器的检测效率提高的放射线检测器 使用具有短荧光寿命的闪烁体。 解决问题的手段放射线检测器是通过将由例如以聚乙烯基甲苯为基础的有机荧光物质构成的光波长转换层安装在由氟化物单晶构成的闪烁体之间， 作为含Ce的LiCaAlF 6晶体，以及具有由透明玻璃材料如硼硅酸盐玻璃构成的光入射窗材料的光电检测器。 在放射线检测器中，由闪烁器发出的光的峰值波长为360nm以下，光转换层转换后的光的峰值波长为400nm以上。 优选地，闪烁体和光波长转换层的折射率均为1.35〜1.65。

    Colquiriite-type crystal, scintillator for neutron detection and neutron detector
    5.
    发明授权
    Colquiriite-type crystal, scintillator for neutron detection and neutron detector 有权
    Colquiriite型晶体，用于中子检测的闪烁体和中子检测器

    公开(公告)号：US08933408B2

    公开(公告)日：2015-01-13

    申请号：US13820175

    申请日：2011-11-01

    申请人： Sumito Ishizu ,  Kentaro Fukuda ,  Noriaki Kawaguchi ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota ,  Yutaka Fujimoto

    发明人： Sumito Ishizu ,  Kentaro Fukuda ,  Noriaki Kawaguchi ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota ,  Yutaka Fujimoto

    IPC分类号： G01T1/20 ,  G01T3/06 ,  C09K11/77 ,  C30B15/00 ,  C30B15/08 ,  C30B29/12

    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 LiM1M2X6, such as LiCaAlF6, 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 6Li 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]优选用于中子检测用闪烁体的colquiriite型晶体，其具有对中子的高灵敏度并且归因于γ射线的背景噪声降低; 包含该晶体的中子检测用闪烁体; 并提供中子检测器。 解决问题的方法由化学式LiM1M2X6表示的含有Na和Ce的LiCaAlF6的扁桃体型晶体，例如含有选自Na中的至少一种碱金属元素的扁桃体型晶体 ，K，Rb和Cs，以及选自Ce，Pr和Nd的镧系元素，同位素比为6Li为20摩尔％以上，优选为50摩尔％以上。 一种用于中子检测的闪烁体，其包括该共挤出型晶体; 和中子探测器。

    METAL FLUORIDE EUTECTIC, NEUTRON SCINTILLATOR AND NEUTRON IMAGING DEVICE
    9.
    发明申请
    METAL FLUORIDE EUTECTIC, NEUTRON SCINTILLATOR AND NEUTRON IMAGING DEVICE 有权
    金属氟化物防腐剂，中性离子色谱仪和中子成像装置

    公开(公告)号：US20130168561A1

    公开(公告)日：2013-07-04

    申请号：US13822744

    申请日：2011-11-01

    申请人： Kentaro Fukuda ,  Noriaki Kawaguchi ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota ,  Yutaka Fujimoto

    发明人： Kentaro Fukuda ,  Noriaki Kawaguchi ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota ,  Yutaka Fujimoto

    IPC分类号： C09K11/61 ,  G01T3/06

    CPC分类号： C09K11/616 ,  C09K11/772 ,  C30B21/00 ,  C30B29/12 ,  G01T3/06 ,  G21K4/00 ,  G21K2004/06

    摘要： [Problems to be Solved] A neutron scintillator excellent in detection efficiency for neutrons, an S/N ratio, and n/γ discrimination ability, and a eutectic preferred for the neutron scintillator are provided.[Means to Solve the Problems] A metal fluoride eutectic, in which a lithium fluoride crystal phase and a crystal phase represented by the chemical formula Ca1-xSrxF2 (where x denotes a number greater than 0, but not larger than 1), such as SrF2 or Ca0.5Sr0.5F2, are present in a phase-separated state; a neutron scintillator comprising the eutectic; and a neutron imaging device comprising a combination of the neutron scintillator and a position-sensitive photomultiplier tube.

    摘要翻译： [待解决的问题]提供了对于中子的检测效率优异的中子闪烁体，S / N比和n /γ辨别能力以及中子闪烁体优选的共晶体。 [解决问题的方法]一种金属氟化物共晶体，其中氟化锂结晶相和由化学式Ca1-xSrxF2表示的结晶相（其中x表示大于0但不大于1的数），例如 SrF2或Ca0.5Sr0.5F2以相分离状态存在; 包含共晶的中子闪烁体; 以及包括中子闪烁体和位置敏感光电倍增管的组合的中子成像装置。

    PHOSWICH THERMAL NEUTRON DETECTOR
    10.
    发明申请
    PHOSWICH THERMAL NEUTRON DETECTOR 审中-公开
    PHOSWICH热中性探测器

    公开(公告)号：US20130112885A1

    公开(公告)日：2013-05-09

    申请号：US13809493

    申请日：2011-07-20

    申请人： Hiromitsu Takahashi ,  Mitsuo Yonetani ,  Masayuki Matsuoka ,  Yasushi Fukazawa ,  Noriaki Kawaguchi ,  Kentaro Fukuda ,  Toshihisa Suyama ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota ,  Yutaka Fujimoto

    发明人： Hiromitsu Takahashi ,  Mitsuo Yonetani ,  Masayuki Matsuoka ,  Yasushi Fukazawa ,  Noriaki Kawaguchi ,  Kentaro Fukuda ,  Toshihisa Suyama ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota ,  Yutaka Fujimoto

    IPC分类号： G01T3/06

    CPC分类号： C09K11/7734 ,  C30B15/00 ,  C30B29/12 ,  G01T1/2008 ,  G01T3/06 ,  G21K4/00

    摘要： [Problems to be Solved] A phoswich radiation detector, which can easily discriminate between detection signals on gamma rays and thermal neutrons, and which can selectively acquire signals on thermal neutrons, is provided.[Means to Solve the Problems] In a phoswich radiation detector having two scintillators and discriminating between thermal neutrons and gamma rays, the detector comprises a scintillator for detecting thermal neutrons, such as LiCaAlF6:Eu, which has a light yield of more than 1500 photons/neutron, and a scintillator for detecting gamma rays, which has a permeable end on a shorter wavelength than the light emission wavelength of the thermal neutron scintillator. The scintillator for detecting gamma rays is characterized by being either an organic solid scintillator, such as a plastic scintillator, which does not contain a total amount of 10 mol % or more of elements selected from 6Li, 10B and Gd, or an inorganic single crystal scintillator, such as lithium glass (containing 6Li and Ce) or BGO, which has an effective atomic number Zeff of 30 or larger and which does not contain a total amount of 10 mol % or more of elements selected from 6Li, 10B and Gd.

    摘要翻译： [待解决的问题]提供了一种可以容易地区分伽马射线和热中子上的检测信号并且可以选择性地获取热中子信号的棱镜辐射探测器。 [解决问题的手段]在具有两个闪烁体并且区分热中子和γ射线的双射线辐射检测器中，检测器包括用于检测热中子的闪烁体，例如LiCaAlF 6：Eu，其具有大于1500个光子的光产量 /中子，以及用于检测伽马射线的闪烁体，其具有比热中子闪烁体的发光波长更短波长的可渗透端。 用于检测γ射线的闪烁体的特征在于：不含总量为10mol％以上的选自6Li，10B和Gd的元素的有机固体闪烁体，例如塑料闪烁体，或无机单晶 诸如具有30或更大的有效原子数Zeff的锂玻璃（含6Li和Ce）或BGO的闪烁体，其不含有选自6Li，10B和Gd的元素的总量的10mol％以上。