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：US20110061587A1

公开(公告)日：2011-03-17

申请号：US12992783

申请日：2009-05-15

申请人： Sumito Ishizu ,  Akira Sekiya ,  Kentaro Fukuda ,  Toshihisa Suyama

发明人： Sumito Ishizu ,  Akira Sekiya ,  Kentaro Fukuda ,  Toshihisa Suyama

IPC分类号： C30B15/08 ,  C30B15/00 ,  C01F17/00

CPC分类号： C01B9/08 ,  C01F17/0031 ,  C01G1/06 ,  C01P2002/84 ,  C01P2002/85 ,  C01P2004/04 ,  C01P2006/80 ,  C30B15/00 ,  C30B15/08 ,  C30B29/12 ,  C30B35/007

摘要： [Problem] To provide a method of producing a pretreated metal fluoride containing impurities such as oxygen in decreased amounts and a fluoride crystal containing impurities such as oxygen in decreased amounts and having excellent optical properties such as transparency.[Means for Solution] A metal fluoride is heated in a temperature range of not lower than 300° K. but not higher than 1780° K in the co-presence of a carbonyl fluoride of an amount of not less than 1/100 mol per mol of the metal fluoride to thereby obtain a pretreated metal fluoride while removing oxygen and water from the starting metal fluoride and from the interior of the production furnace. Further, the pretreated metal fluoride as a starting material is heated and melted, and a fluoride crystal of a high quality is obtained from the obtained melt by a crystal growing method such as a melt pull-up method or a melt pull-down method.

摘要翻译： 提供一种以减少量生产含有诸如氧等杂质的预处理金属氟化物的方法和含有少量杂质的氟化物晶体，并且具有优异的光学性能如透明度的方法。 [解决方案]金属氟化物在不低于300°K的温度范围内加热，但不高于1780°K，在不少于1/100mol / 摩尔的金属氟化物，从而得到预处理的金属氟化物，同时从起始金属氟化物和生产炉内部除去氧和水。 此外，将作为起始原料的预处理的金属氟化物加热熔融，并通过熔融拉拔法或熔融拉拔法等晶体生长法从所得熔体中获得高质量的氟化物晶体。

公开(公告)号：US20100314550A1

公开(公告)日：2010-12-16

申请号：US12866863

申请日：2009-03-17

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

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

IPC分类号： G01T3/06 ,  G01T1/202 ,  C30B11/02

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

摘要： 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/nm3) of 6Li, having an effective atomic number of 10 to 40, containing a lanthanoid such as cerium, praseodymium or europium, and being represented by LiCaAlF6, LiSrAlF6, LiYF4 etc.

摘要翻译： 提供对中子射线具有高灵敏度的中子检测用闪烁体，并且由于γ射线引起的背景噪声降低。 解决问题的手段一种用于中子检测的闪烁体，其包含含有2价以上的金属如钙，铝或钇作为构成元素的金属氟化物晶体; 锂; 氟，氟化物晶体，每单位体积（原子/ nm 3）为1〜20原子，6Li，有效原子数为10〜40，含有铈，镨，铕等镧系元素，由LiCaAlF6， LiSrAlF6，LiYF4等

公开(公告)号：US08044367B2

公开(公告)日：2011-10-25

申请号：US12866863

申请日：2009-03-17

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

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

IPC分类号： G01T3/06

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

摘要： 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/nm3) of 6Li, having an effective atomic number of 10 to 40, containing a lanthanoid such as cerium, praseodymium or europium, and being represented by, for instance, LiCaAlF6, LiSrAlF6 and LiYF4. The scintillator for neutron detection has high sensitivity to neutron rays, and is reduced in a background noise attributed to γ rays.

摘要翻译： 一种用于中子检测的闪烁体，其包含金属氟化物晶体，其含有价态为2以上的金属如钙，铝或钇作为构成元素; 锂; 和氟，含有每单位体积（原子/ nm 3）为1〜20个原子的6Li的金属氟化物结晶，其有效原子序数为10〜40，含有镧系元素，例如铈，镨或铕，由 LiCaAlF6，LiSrAlF6和LiYF4。 用于中子检测的闪烁体对中子射线具有高灵敏度，并且在归因于γ射线的背景噪声中降低。

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。

公开(公告)号：US20120074356A1

公开(公告)日：2012-03-29

申请号：US13376106

申请日：2010-06-01

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

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

IPC分类号： C09K11/85

CPC分类号： G21K4/00 ,  C09K11/7773 ,  C30B15/08 ,  C30B29/12 ,  G21K2004/06

摘要： [Problems to be Solved]The present invention aims to provide a scintillator which can detect photons of high energy, such as hard X-rays or γ-rays, with high sensitivity.[Means to Solve the Problems]A scintillator comprises lithium lutetium fluoride containing neodymium as a luminescence center, the lithium lutetium fluoride being represented by the chemical formula LiLu1-xNdxF4 where x is in the range of 0.00001 to 0.2, preferably, 0.0001 to 0.05. Preferably, the scintillator comprises a single crystal of the lithium lutetium fluoride containing neodymium.

摘要翻译： [待解决的问题]本发明的目的在于提供一种能够高灵敏度地检测高能量的光子（例如硬X射线或γ射线）的闪烁体。 [解决问题的手段]闪烁体包含含有钕作为发光中心的氟化锂镥，氟化锂锂由化学式LiLu1-xNdxF4表示，其中x在0.00001〜0.2的范围内，优选为0.0001〜0.05。 优选地，闪烁体包括含有钕的锂镥氟化物的单晶。

公开(公告)号：US20100200758A1

公开(公告)日：2010-08-12

申请号：US12702478

申请日：2010-02-09

申请人： Kentaro Fukuda ,  Noriaki Kawaguchi ,  Toshihisa Suyama ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yuui Yokota ,  Yoshihiro Yokota ,  Takeshi Tachibana

发明人： Kentaro Fukuda ,  Noriaki Kawaguchi ,  Toshihisa Suyama ,  Akira Yoshikawa ,  Takayuki Yanagida ,  Yuui Yokota ,  Yoshihiro Yokota ,  Takeshi Tachibana

IPC分类号： G01T1/202 ,  G01T1/20

CPC分类号： G01T1/2018

摘要： A radiation detecting apparatus of the present invention is an apparatus comprising a scintillator for converting incident radiation into ultraviolet radiation having a wavelength of 220 nm or less, the scintillator being composed of, for example, Nd-doped LaF3 crystals; and a diamond thin film sensor for guiding the resulting ultraviolet radiation and converting it into an electrical signal, the radiation detecting apparatus being adapted to transform the incident radiation to the electrical signal.The radiation detecting apparatus can detect radiation, such as X-rays, α rays, β rays, γ rays, or neutron rays, with high sensitivity. The radiation detecting apparatus also has a fast response, is very easy to downsize, has high resistance to radiation, and can be preferably used in the medical field, the industrial field, or the security field.

摘要翻译： 本发明的放射线检测装置是包括用于将入射的辐射转换为波长为220nm以下的紫外线的闪烁体的装置，该闪烁体由例如Nd掺杂的LaF 3晶体构成; 以及金刚石薄膜传感器，用于引导所产生的紫外线辐射并将其转换成电信号，该辐射检测装置适于将入射辐射转换成电信号。 放射线检测装置可以检测X射线，α射线等的辐射。 射线，γ射线或中子射线，具有高灵敏度。 放射线检测装置也具有快速响应，非常容易小型化，具有高耐辐射性，并且可以优选用于医疗领域，工业领域或安全领域。

公开(公告)号：US20100001191A1

公开(公告)日：2010-01-07

申请号：US12524006

申请日：2008-02-15

申请人： Hiroyuki Takahashi ,  Akira Yoshikawa ,  Rayko Simura ,  Kentaro Fukuda ,  Toshihisa Suyama

发明人： Hiroyuki Takahashi ,  Akira Yoshikawa ,  Rayko Simura ,  Kentaro Fukuda ,  Toshihisa Suyama

IPC分类号： G01T1/20

CPC分类号： G01T1/2935

摘要： A radiation detection apparatus comprising a scintillator composed of a lanthanum fluoride crystal containing neodymium or a lithium barium fluoride crystal containing neodymium, for converting incident radiation into ultraviolet ray and a micro-strip gas chamber for converting the incident ultraviolet ray into an electric signal and capable of extracting the radiation as an electric signal.The radiation detection apparatus which has excellent spatial resolution and can detect even a high-energy photon at high sensitivity is provided at low cost.

摘要翻译： 一种辐射检测装置，包括由含有钕的氟化镧晶体或含有钕的氟化锂的晶体组成的闪烁体，用于将入射的辐射转换为紫外线;以及微带气体室，用于将入射的紫外线转换成电信号， 提取辐射作为电信号。 具有优异的空间分辨率并且甚至可以以高灵敏度检测高能量光子的辐射检测装置以低成本提供。

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。