公开(公告)号：US20180059288A1

公开(公告)日：2018-03-01

申请号：US15556989

申请日：2016-03-03

Applicant: TOKUYAMA CORPORATION

Inventor： Sumito ISHIZU ,  Kentaro FUKUDA ,  Kentaro MATSUO

IPC: G02B1/02 ,  C30B29/12

CPC classification number: G02B1/02 ,  C30B15/00 ,  C30B27/02 ,  C30B29/12 ,  G01N27/4074 ,  G01T1/2935

Abstract: 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.

公开(公告)号：US20170052265A1

公开(公告)日：2017-02-23

申请号：US15306384

申请日：2015-06-28

Applicant: TOKUYAMA CORPORATION

Inventor： Kentaro FUKUDA ,  Takahiro YOSHIDA

IPC: G01T3/06

CPC classification number: G01T3/06 ,  C09K11/02 ,  C09K11/7733 ,  C09K11/7773 ,  G01T1/20

Abstract: A neutron scintillator excellent in neutron detection efficiency and n/γ 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 MgF2, CaF2 or SrF2, 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.

Abstract translation: 中子闪烁体包括具有并入具有相似折射率的树脂中的共晶颗粒的树脂组合物，共晶粒子的球当量直径为50〜1000μm左右，并且由氟化锂和无机荧光材料构成，例如 MgF2，CaF2或SrF2，作为发光中心原子，含有镧系元素，例如Ce，Pr，Nd，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm或Yb的无机荧光材料。

公开(公告)号：US20130221227A1

公开(公告)日：2013-08-29

申请号：US13760471

申请日：2013-02-06

Applicant: TOKUYAMA CORPORATION ,  NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY ,  TOHOKU UNIVERSITY

Inventor： Kenichi WATANABE ,  Yoshihiko TAKAHASHI ,  Atsushi YAMAZAKI ,  Akira URITANI ,  Tetsuo IGUCHI ,  Kentaro FUKUDA ,  Noriaki KAWAGUCHI ,  Sumito ISHIZU ,  Akira YOSHIKAWA ,  Takayuki YANAGIDA

IPC: G01T3/06

CPC classification number: G01T3/06 ,  G01T1/2018

Abstract: Provided is a radiation detector with improved n/γ discrimination and usable even under high counting rate conditions with a reduced load on a signal-processing system. The detector capable of distinguishing neutron and gamma-ray events includes: a scintillator; an optical filter; a first photodetector to which a first part of light emitted from the scintillator is introduced via the optical filter; and a second photodetector to which a second part of light emitted from the scintillator is introduced not via the optical filter, wherein, for a set of two wavelengths A and (A+B) nm, the scintillator emits at least a light of A nm and a light of (A+B) nm when irradiated by gamma-ray, and emits a light of A nm and does not emit a light of (A+B) nm when irradiated by neutrons; and the optical filter blocks the light of A nm and transmits the light of (A+B) nm.

Abstract translation: 提供了一种具有改进的n /γ鉴别的辐射检测器，即使在高计数速率条件下，信号处理系统的负载减小。 能够区分中子和伽马射线事件的检测器包括：闪烁体; 滤光片; 第一光电检测器，经由滤光器引入从闪烁体发射的第一部分光; 以及第二光电检测器，其中从闪烁体发射的第二部分光不经由所述滤光器被引入所述第二光电检测器，其中，对于两组波长A和（A + B）nm，所述闪烁体至少发射出一个Anm 以及当用γ射线照射时（A + B）nm的光，并且发射Anm的光，并且当被中子照射时不发射（A + B）nm的光; 并且光学滤波器阻挡Anm的光并透射（A + B）nm的光。

公开(公告)号：US20130206996A1

公开(公告)日：2013-08-15

申请号：US13760461

申请日：2013-02-06

Applicant: TOKUYAMA CORPORATION ,  NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY ,  TOHOKU UNIVERSITY

Inventor： Kenichi WATANABE ,  Yuya KAWABATA ,  Atsushi YAMAZAKI ,  Akira URITANI ,  Tetsuo IGUCHI ,  Kentaro FUKUDA ,  Noriaki KAWAGUCHI ,  Sumito ISHIZU ,  Akira YOSHIKAWA ,  Takayuki YANAGIDA

IPC: G01T3/06

CPC classification number: G01T3/06 ,  C09K11/7733 ,  C30B29/12

Abstract: Provided is a scintillation neutron detector capable of measuring neutrons with precision even under a high amount of γ rays as background noise and excellent in neutron counting precision, the scintillation neutron detector comprising a neutron scintillator crystal containing 6Li, and the crystal having a specific surface area of no less than 60 cm2/cm3.

Abstract translation: 本发明提供一种闪烁中子检测器，其能够即使在大量伽马射线下也能够精确地测量中子，作为背景噪声和中子计数精度优异，所述闪烁中子检测器包括含有6Li的中子闪烁体晶体，并且具有比表面积 不小于60cm 2 / cm 3。

公开(公告)号：US20160266262A1

公开(公告)日：2016-09-15

申请号：US15031756

申请日：2014-10-28

Applicant: Tokuyama Corporation

Inventor： Kentaro FUKUDA ,  Hiroaki SAITO

IPC: G01T3/06

CPC classification number: G01T3/06 ,  C09K11/02 ,  C09K11/7734 ,  G21K4/00

Abstract: A neutron scintillator includes a resin composition having a resin and an inorganic phosphor containing at least one kind of neutron-capturing isotope that is selected from lithium 6 and boron 10 such as Eu:LiCaAlF6. The resin composition contains 0.2-30×1018 atom/mm3 of lithium 6 and 0.05-8×1018 atom/mm3 of boron 10 and is in such a form that the average diameter of inscribed spheres is 5 mm or less. A neutron scintillator is formed of a resin-based composite having 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 ½ of the content of the neutron-capturing isotope in the resin composition. 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.

Abstract translation: 中子闪烁体包括具有树脂的树脂组合物和含有选自锂6和硼10中的至少一种中子捕获同位素的无机荧光体，例如Eu：LiCaAlF 6。 该树脂组合物含有0.2-30×1018原子/ mm 3的锂6和0.05-8×1018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。 中子闪烁体由具有由上述树脂组合物和补充部分形成的多个部分的树脂基复合材料形成，其中中子捕获同位素的含量不超过中子含量的1/2 - 在树脂组合物中捕获同位素。 由树脂组合物形成的各个部分中的内接球体的中心之间的距离与其中的内接球体的直径之和的比率为1.2或更大。

公开(公告)号：US20150307777A1

公开(公告)日：2015-10-29

申请号：US14651270

申请日：2013-12-11

Applicant: TOKUYAMA CORPORATION

Inventor： Kentaro FUKUDA ,  Noriaki KAWAGUCHI ,  Sumito ISHIZU

IPC: C09K11/77 ,  G01T3/06

CPC classification number: C09K11/7734 ,  C09K11/7721 ,  G01T3/06

Abstract: 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 cm2/cm3, 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.

Abstract translation: 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下，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。