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公开(公告)号：JPH0519059A
公开(公告)日：1993-01-26
申请号：JP17391391
申请日：1991-07-15
Applicant: ALOKA CO LTD
Inventor： NAKAOKA HIROSHI , MATSUBARA SHOHEI , OSHIMA TOSHINORI
IPC: G01T1/169
Abstract: PURPOSE:To obtain a title device which can obtain exact measurement results of only radioactivity deposited on a body surface without previous measurement of radioactivity from inside a body. CONSTITUTION:A thin-type beta-ray detector 12 is fitted with a gamma-ray detector 16 on the back side to constitute the principal part. On the basis of a count value of the whole gamma rays of the gamma-ray detector 16, a gamma-ray count value (count of a part of gamma-rays) by the beta-ray detector 12 is calculated by a first arithmetic part 26. A calculated value of the first arithmetic part 26 is subtracted from a count value of the beta-ray detector 12 by a second arithmetic part 28 so as to obtain measurements only of beta rays due to radioactivity detected on the body surface of a subject 100.
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公开(公告)号：JPH0369139B2
公开(公告)日：1991-10-31
申请号：JP4529086
申请日：1986-03-04
Applicant: ALOKA
Inventor： SATO HIROO , OOSHIMA TOSHINORI , YANAI TOSHIO , YOSHIZUMI MINORU , MATSUBARA SHOHEI
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公开(公告)号：JPS62206757A
公开(公告)日：1987-09-11
申请号：JP4529086
申请日：1986-03-04
Applicant: ALOKA CO LTD
Inventor： SATO HIROO , OSHIMA TOSHINORI , YANAI TOSHIO , YOSHIZUMI MINORU , MATSUBARA SHOHEI
Abstract: PURPOSE:To make it very easy to manufacture a thin window, by forming a window material in a thin membrane at a surface of a protective plate, and then processing the protective plate into a specific form of a protective frame through the etching process. CONSTITUTION:At first, a window material is pasted or vacuum evaporated on a protective plate 20 to form a thin membrane 22. Then, a photoresist layer 24 is spread and formed at the other side of the protective plate 20. After that, a masking plate 26 with cuttings responding to the radioactive beam permeable holes of the thin membrane protective frame is arranged opposite to the layer 24, and the light is radiated over the masking plate 26. When it is washed in such a condition, only exposed portions of the layer 24 remain as solid membranes 24a and the unexposed portions are removed, to expose the protective plate 20. Then, by processing the protective plate 20 in an acid solution, only the portions of the protective plate 20 covered by the solid membranes 24a remain, and the exposed portions are solved and removed. As a result, the remaining portions 20a of the protective plate 20 make the protective frame of the thin membrane 22. Thus, a thin window 30 incorporating the protective frame and the thin membranes can be easily manufactured.
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公开(公告)号：JP2010117366A
公开(公告)日：2010-05-27
申请号：JP2010029967
申请日：2010-02-15
Applicant: Aloka Co Ltd , アロカ株式会社
Inventor： MINAGAWA EIICHI , MATSUBARA SHOHEI
CPC classification number: G01T1/2002
Abstract: PROBLEM TO BE SOLVED: To form a physically strong shielding layer with a good light blocking effect on a scintillator. SOLUTION: Heating treatment in the state of a thermal transfer sheet 18 polymerized onto a scintillator plate 16 causes a film 14 to be peeled off from the sheet 18 and pasted onto the plate 16. In other words, the film 14 is transferred onto the scintillator plate 16 and is integrated with it without putting the film 14 as a single body into existence. The film 14 has a protective layer 24, an aluminum layer 26 and a bonding layer 28. The aluminum layer 26 is protected by the protective layer 24. As a scintillator member 10 itself functions as a backface supporting substrate for the protective layer 24 and the aluminum layer 26, the film 14 resistant to external action is formed. COPYRIGHT: (C)2010,JPO&INPIT
Abstract translation: 要解决的问题：形成对闪烁体具有良好遮光效果的物理强度的屏蔽层。 解决方案：在聚合到闪烁体板16上的热转印片18的状态下的加热处理使得膜14从片材18剥离并粘贴到板16上。换句话说，转移膜14 到闪烁体板16上并与之成一体，而不会将膜14作为单一体存在。 膜14具有保护层24，铝层26和接合层28.铝层26被保护层24保护。作为闪烁器构件10本身用作用于保护层24的背面支撑衬底和 铝层26形成耐外部作用的膜14。 版权所有（C）2010，JPO＆INPIT
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公开(公告)号：JP2007225569A
公开(公告)日：2007-09-06
申请号：JP2006050223
申请日：2006-02-27
Applicant: Aloka Co Ltd , アロカ株式会社
Inventor： ASAI AKIO , MATSUBARA SHOHEI , OOTA YOSHITAKA
Abstract: PROBLEM TO BE SOLVED: To provide a scintillation detector capable of detecting β-rays further precisely.
SOLUTION: A scintillation detector 10 for detecting β-rays discharged from radionuclide in sample gas comprises a plate-like scintillator 12 for emitting light in response to the β-rays and γ-rays, a plate-like scintillator 13 arranged near and in substantially parallel to this and emits light in response to the γ-rays, a plate-like light shield body 14 for shielding light between both, a gas introduction chamber 15 disposed on the opposite side to the light shield body 14 with respect to the scintillator 12 and into which sample gas is introduced, and photodetection sections 17 and 18 that are disposed on the both sides of two scintillators and detect light of corresponding scintillators, respectively. The scintillator 12 and light shield body 14 are constituted so that the β-rays incoming into the scintillator 12 do not income into the scintillator 13, and the scintillators 12 and 13 and light shield body 14 have γ-ray transmission.
COPYRIGHT: (C)2007,JPO&INPITAbstract translation: 要解决的问题：提供能够进一步精确地检测β射线的闪烁检测器。 解决方案：用于检测样品气体中从放射性核素排出的β射线的闪烁检测器10包括响应于β射线和γ射线发光的板状闪烁体12，布置在近旁的板状闪烁体13 大致平行于其并且发射响应于γ射线的光，用于屏蔽两者之间的光的板状遮光体14相对于遮光体14设置在与遮光体14相反的一侧上的气体导入室15 闪烁体12和被引入样品气体的光检测部分17和18分别设置在两个闪烁体的两侧并检测相应的闪烁体的光。 闪烁体12和遮光体14构成为使得入射到闪烁器12的β射线不会进入闪烁体13，并且闪烁体12,13和遮光体14具有γ射线透射。 版权所有（C）2007，JPO＆INPIT
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Patent Agency Ranking
公开(公告)号：JP2004325417A
公开(公告)日：2004-11-18
申请号：JP2003124409
申请日：2003-04-28
Applicant: Aloka Co Ltd , アロカ株式会社
Inventor： KAKEDA TOSHIYUKI , MATSUBARA SHOHEI
Abstract: PROBLEM TO BE SOLVED: To specify a radiation coming direction by simple constitution. SOLUTION: A shielding body 20 is provided rotatably in a periphery of a scintillator 16. A rotary mechanism 22 rotation-drives the shielding body 20 continuously or intermittently. An observed radiation intensity goes down when an existing direction of the shielding body 20 is consistent with the radiation coming direction. The radiation coming direction is thereby specified by specifying a sinking point in an intensity distribution of the radiation expressing a counting rate or a dosage rate in every direction. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 要解决的问题：通过简单的结构来指定辐射进入方向。 解决方案：屏蔽体20可旋转地设置在闪烁体16的周围。旋转机构22旋转驱动屏蔽体20连续或间歇地驱动。 当屏蔽体20的现有方向与辐射进入方向一致时，观察到的辐射强度下降。 从而通过在每个方向上指定表示计数率或剂量率的辐射的强度分布中的下沉点来指定辐射到达方向。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2004108796A
公开(公告)日：2004-04-08
申请号：JP2002268252
申请日：2002-09-13
Applicant: Aloka Co Ltd , Shigeru Moriuchi , アロカ株式会社 , 森内 茂
Inventor： UCHIBORI TAKESHI , MATSUBARA SHOHEI , YANO KENICHI , MORIUCHI SHIGERU
Abstract: PROBLEM TO BE SOLVED: To improve measurement accuracy over a wide range, from a condition in which the radiation is little to a condition in which it is ample, in the device for obtaining a dose rate or the like, on the basis of the pulse height of a detection pulse.
SOLUTION: A G(E) function is stored in a G(E) function storage part 28, for each count rate range. A G(E) function selection part 26 selects, from them, the G(E) function corresponding to the current count rate obtained by a counter 24. A dose rate calculation part 20 calculates the dose rate by multiplying the count value of each channel of the energy spectrum obtained at a multi-channel analyzer (MCA) 18 by the selected G(E) function, and by totalizing them.
COPYRIGHT: (C)2004,JPO-
公开(公告)号：JP2001242252A
公开(公告)日：2001-09-07
申请号：JP2000050235
申请日：2000-02-25
Applicant: ALOKA CO LTD
Inventor： IWAMOTO AKINORI , OSHIKIRI KEISUKE , MATSUBARA SHOHEI
Abstract: PROBLEM TO BE SOLVED: To realize the low sensitivity measurement of a radioactive drug (a second sample) before charged into an organism, and the high sensitivity measurement of blood (a first sample) collected from the organism, with simple constitution. SOLUTION: The high sensitivity measurement of the first sample is performed by a first measuring unit 10, and the low sensitivity measurement of the second sample is performed by a second measuring unit 12. A scintillator is used for both measurement. An emission port 102 is formed in a shielding container 34 of the second measuring unit 12, and a receiving port 100 is formed in a shielding container 26 of the first measuring unit 10. A collimator 36 is provided between both ports 100, 102. A thin-walled part 22A is formed at a scintillator container 22 made of aluminum or the like.
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公开(公告)号：JP2001042040A
公开(公告)日：2001-02-16
申请号：JP21653099
申请日：1999-07-30
Applicant: ALOKA CO LTD , TOKYO ELECTRIC POWER CO
Inventor： YANO KENICHI , MATSUBARA SHOHEI , NAKAOKA HIROSHI , NISHIDA YOSHIHIRO , SASAKI YOZO , NAKABAYASHI KOICHI , UEDA JUNJI
IPC: G01T1/167
Abstract: PROBLEM TO BE SOLVED: To accurately detect the γ rays of a nuclide of interest in an off gas being emitted from a reactor. SOLUTION: A detection part 12 is provided at a specific part of piping 10 where an off gas flows. A main detector 16 is buried into scintillator blocks 14A and 14B. A sub detector is composed of the scintillator blocks 14A and 14B, and photomultipliers 18A and 18B. Interference γ rays with 511 keV are transmitted through the main detector 16, and are detected by both of the main detector 16 and the sub detector, thus excluding the interference γ rays from a measurement result by utilizing the simultaneous count. The γ rays from a nuclide of interest with a peak at a low-energy region can be accurately detected.
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公开(公告)号：JPH11311676A
公开(公告)日：1999-11-09
申请号：JP11808798
申请日：1998-04-28
Applicant: ALOKA CO LTD
Inventor： MATSUBARA SHOHEI
Abstract: PROBLEM TO BE SOLVED: To determine abnormality of a fuel rod by measuring fission product rare gas with good sensitivity under the existence of N gas produced by activation, during monitoring of offgas extracted from a reactor. SOLUTION: In a gas chamber 12, offgas is introduced and γ-ray radiated from a gas chamber 12 is detected by a detector 14. In this case, for reducing the γ-rays of 511 keV produced by the annihilation of positrons emitted from N, a reduction filter 20 is provided. The offgas spectrum is measured in a spectrum measuring part 30, and the concentration of each of species is operated in an operation part 32. In a determining part 34, determining of fuel abnormality is made. Also in a determining part 34, the degree of leakage is determined, based on the concentration ratio of at least two species having different half lives from each other.
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