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。

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。

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。

公开(公告)号：US20130327946A1

公开(公告)日：2013-12-12

申请号：US14001181

申请日：2012-02-24

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 ,  C09K11/613 ,  C09K11/7732 ,  C30B15/00 ,  C30B29/12 ,  G21K4/00

摘要： A novel scintillator for neutron detection is capable of increasing the probability of inducing a nuclear reaction using epithermal neutrons having higher energy than thermal neutrons as a result of increasing thickness in the direction of incidence of neutron radiation. A scintillator for neutron detection includes a colquiriite-type fluoride single crystal containing europium, containing 0.0025 mol % or more and less than 0.05 mol % europium, containing 0.80 atom/nm3 or more 6Li, and being shaped such that the thickness in the thickest part exceeds 1 mm.

摘要翻译： 用于中子检测的新颖的闪烁体能够增加使用具有比热中子更高的能量的超热中子引起核反应的可能性，这是由于中子辐射入射方向上的厚度增加的结果。 用于中子检测的闪烁体包括含有0.0025摩尔％以上且小于0.05摩尔％的含有0.80原子/ nm 3以上6Li的铕的含有铕的扁桃体型氟化物单晶，并且成形为使得最厚部分 超过1毫米。

公开(公告)号：US20120286204A1

公开(公告)日：2012-11-15

申请号：US13519040

申请日：2010-12-22

申请人： Noriaki Kawaguchi ,  Sumito Ishizu ,  Kentaro Fukuda ,  Toshihisa Suyama ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota ,  Naoto Abe

发明人： Noriaki Kawaguchi ,  Sumito Ishizu ,  Kentaro Fukuda ,  Toshihisa Suyama ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota ,  Naoto Abe

IPC分类号： C09K11/85

CPC分类号： C30B29/12 ,  C09K11/7773 ,  C30B15/08 ,  G21K4/00

摘要： [Problems to be Solved] A fluoride which emits light with high brightness in a vacuum ultraviolet region is provided. Also provided are a novel vacuum ultraviolet light emitting element which comprises the fluoride and which can be suitably used in photolithography, cleaning of a semiconductor or liquid crystal substrate, sterilization, next-generation large-capacity optical disks, medical care (ophthalmologic treatment, DNA cleavage), etc.; and a vacuum ultraviolet light emitting scintillator which is composed of the fluoride and can be suitably used in a small-sized radiation detector incorporating a diamond light receiving element or AlGaN light receiving element with a low background noise as an alternative to a conventional photomultiplier tube.[Means to Solve the Problems] A metal fluoride crystal represented by a chemical formula K3-XNaXTmYZLuY(1-Z)F3+3Y where 0.7

摘要翻译： [待解决的问题]提供了在真空紫外区域中发出高亮度的光的氟化物。 还提供了一种新颖的真空紫外光发射元件，其包含氟化物，其可以适用于光刻，半导体或液晶基板的清洁，灭菌，下一代大容量光盘，医疗护理（眼科治疗，DNA 切割）等; 以及由氟化物组成的真空紫外光发射闪烁体，可以适用于具有低背景噪声的金刚石光接收元件或AlGaN光接收元件的小型辐射检测器，作为常规光电倍增管的替代。 [解决问题的手段]以化学式K3-XNaXTmYZLuY（1-Z）F3 + 3Y表示的金属氟化物晶体，其中0.7

公开(公告)号：US20120161609A1

公开(公告)日：2012-06-28

申请号：US13394521

申请日：2010-09-06

申请人： Shingo Ono ,  Toshihisa Suyama ,  Kentaro Fukuda ,  Sumito Ishizu ,  Noriaki Kawaguchi ,  Tomohito Nagami ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota

发明人： Shingo Ono ,  Toshihisa Suyama ,  Kentaro Fukuda ,  Sumito Ishizu ,  Noriaki Kawaguchi ,  Tomohito Nagami ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota

IPC分类号： H01J63/04

CPC分类号： H05B33/14 ,  C09K11/7773 ,  H01J29/20 ,  H01J63/06 ,  H05B33/145

摘要： A vacuum ultraviolet light emitting device comprising: a luminescence substrate which is composed of a transparent substrate of lithium fluoride, magnesium fluoride, calcium fluoride, barium fluoride or the like, and a metal fluoride thin-film layer formed on the transparent substrate and being a thin-film layer of a metal fluoride such as LuLiF4, LaF3, BaF2 or CaF2, the metal fluoride being doped with atoms of neodymium (Nd), thulium (Tm), erbium (Er) or the like; and an electron beam source such as a thermionic emission gun or a field emission gun, wherein the luminescence substrate and the electron beam source are disposed in a vacuum atmosphere, and the metal fluoride thin-film layer is irradiated with electron beams from the electron beam source to emit light including wavelength components of vacuum ultraviolet light.

摘要翻译： 一种真空紫外线发光装置，其特征在于，具备：由氟化锂，氟化镁，氟化钙，氟化钡等的透明基板和形成在所述透明基板上的金属氟化物薄膜层构成的发光基板， 诸如LuLiF4，LaF3，BaF2或CaF2的金属氟化物的薄膜层，金属氟化物掺杂有钕（Nd），ium（Tm），铒（Er）等原子; 以及诸如热电子发射枪或场发射枪的电子束源，其中发光基板和电子束源设置在真空气氛中，并且金属氟化物薄膜层被来自电子束的电子束照射 源发射包括真空紫外光的波长分量的光。

公开(公告)号：US20120018642A1

公开(公告)日：2012-01-26

申请号：US13256594

申请日：2010-03-19

申请人： Kentaro Fukuda ,  Sumito Ishizu ,  Noriaki Kawaguchi ,  Toshihisa Suyama ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota ,  Hidetoshi Kubo ,  Toru Tanimori ,  Hiroyuki Sekiya

发明人： Kentaro Fukuda ,  Sumito Ishizu ,  Noriaki Kawaguchi ,  Toshihisa Suyama ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota ,  Hidetoshi Kubo ,  Toru Tanimori ,  Hiroyuki Sekiya

IPC分类号： G01T1/202 ,  G01T1/20

CPC分类号： G01T1/28 ,  H01J31/49 ,  H01J47/02

摘要： [Problems to be Solved] It is an object of the present invention to provide a novel radiographic image detector which can detect radiation, such as hard X-rays or γ-rays, with high sensitivity and which is excellent in position resolution and count rate characteristic.[Means to Solve the Problems] A radiographic image detector comprises a combination of a scintillator, such as a lanthanum fluoride crystal containing neodymium, for converting incident radiation into ultraviolet rays; and a gas multiplication ultraviolet image detector for converting ultraviolet rays into electrons, amplifying such electrons by use of a gas electron avalanche phenomenon, and detecting the electrons. The radiographic image detector is characterized in that the gas multiplication ultraviolet image detector is basically constituted by a photoelectric conversion substance, such as cesium iodide or cesium telluride, for converting ultraviolet rays into electrons; a gas electron multiplier for amplifying electrons by use of the gas electron avalanche phenomenon; and a pixel electrode having an amplification function and a detection function.

摘要翻译： [待解决的问题]本发明的目的是提供一种能够以高灵敏度检测诸如硬X射线或γ射线等辐射的新型放射线图像检测器，其位置分辨率和计数率优异 特性。 解决问题的手段放射线图像检测器包括闪烁体，例如含有钕的氟化镧晶体，用于将入射辐射转换成紫外线的组合; 以及用于将紫外线转换成电子的气体倍增紫外线图像检测器，利用气体电子雪崩现象来放大这些电子，并检测电子。 射线照相图像检测器的特征在于，气相色谱紫外图像检测器基本上由诸如碘化铯或碲化铯的光电转换物质构成，用于将紫外线转换成电子; 用于通过使用气体电子雪崩现象来放大电子的气体电子倍增器; 以及具有放大功能和检测功能的像素电极。

公开(公告)号：US08642972B2

公开(公告)日：2014-02-04

申请号：US13695088

申请日：2011-04-26

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

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

IPC分类号： G01T3/06

CPC分类号： G01T3/06 ,  C09K11/7733 ,  G21K4/00

摘要： [Problems to be Solved] A neutron scintillator excellent in neutron detection efficiency and n/γ discrimination ability, and a neutron detector using the neutron scintillator are provided.[Means to Solve the Problems] A neutron scintillator comprising a eutectic body composed of laminar lithium fluoride crystals and laminar calcium fluoride crystals alternately arranged in layers, the thickness of the lithium fluoride crystal layers in the eutectic body being 0.1 to 5 μm; or a neutron scintillator comprising a eutectic body composed of laminar lithium fluoride crystals and laminar calcium fluoride crystals alternately arranged in layers, the calcium fluoride crystal layers in the eutectic body being linearly continuous in at least one direction; and a neutron detector basically constructed from any of the neutron scintillators and a photodetector.

摘要翻译： [待解决的问题]提供了中子检测效率和n /γ辨别能力优异的中子闪烁体和使用中子闪烁体的中子检测器。 [解决问题的手段]包含由层状氟化锂晶体和层状氟化钙晶体构成的共晶体的中子闪烁体，层状交替排列，共晶体中的氟化锂晶体层的厚度为0.1〜5μm; 或包含交替排列成层状氟化锂晶体和层状氟化钙晶体的共晶体的中子闪烁体，所述共晶体中的氟化钙晶体层在至少一个方向上呈线性连续; 以及基本由中子闪烁体和光电检测器构成的中子探测器。

公开(公告)号：US20130043402A1

公开(公告)日：2013-02-21

申请号：US13695088

申请日：2011-04-26

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

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

IPC分类号： G01T3/06

CPC分类号： G01T3/06 ,  C09K11/7733 ,  G21K4/00

摘要： [Problems to be Solved] A neutron scintillator excellent in neutron detection efficiency and n/γ discrimination ability, and a neutron detector using the neutron scintillator are provided.[Means to Solve the Problems] A neutron scintillator comprising a eutectic body composed of laminar lithium fluoride crystals and laminar calcium fluoride crystals alternately arranged in layers, the thickness of the lithium fluoride crystal layers in the eutectic body being 0.1 to 5 μm; or a neutron scintillator comprising a eutectic body composed of laminar lithium fluoride crystals and laminar calcium fluoride crystals alternately arranged in layers, the calcium fluoride crystal layers in the eutectic body being linearly continuous in at least one direction; and a neutron detector basically constructed from any of the neutron scintillators and a photodetector.[Selected Drawing] None

摘要翻译： [待解决的问题]提供了中子检测效率和n /γ辨别能力优异的中子闪烁体和使用中子闪烁体的中子检测器。 [解决问题的手段]包含由层状氟化锂晶体和层状氟化钙晶体构成的共晶体的中子闪烁体，层状交替排列，共晶体中的氟化锂晶体层的厚度为0.1〜5μm; 或包含交替排列成层状氟化锂晶体和层状氟化钙晶体的共晶体的中子闪烁体，所述共晶体中的氟化钙晶体层在至少一个方向上呈线性连续; 以及基本由中子闪烁体和光电检测器构成的中子探测器。 [已选图]无

公开(公告)号：US20130181137A1

公开(公告)日：2013-07-18

申请号：US13698390

申请日：2011-05-18

申请人： Kenichi Watanabe ,  Atsushi Yamazaki ,  Akira Uritani ,  Yoshiyuki Kondo ,  Tetsuo Iguchi ,  Noriaki Kawaguchi ,  Kentaro Fukuda ,  Toshihisa Suyama ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota

发明人： Kenichi Watanabe ,  Atsushi Yamazaki ,  Akira Uritani ,  Yoshiyuki Kondo ,  Tetsuo Iguchi ,  Noriaki Kawaguchi ,  Kentaro Fukuda ,  Toshihisa Suyama ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yui Yokota

IPC分类号： G01T3/06

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

摘要： A neutron radiation detector has a function that discriminates between neutron radiation and γ radiation based on a difference in pulse shape between photodetection signals from a neutron radiation detection scintillator, which includes a Ce-containing LiCaAlF6 single crystal.

摘要翻译： 中子辐射检测器具有基于来自包含含铈LiCaAlF6单晶的中子辐射检测闪烁体的光检测信号之间的脉冲形状差异来区分中子辐射和伽马辐射的功能。