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    • 5. 发明申请
    • Photomultiplier
    • 光电倍增管
    • US20090218944A1
    • 2009-09-03
    • US11921934
    • 2006-06-01
    • Hiroyuki KyushimaHideki ShimoiHiroyuki SugiyamaHitosha KishitaSuenori KimuraYuji MasudaTakayuki Ohmura
    • Hiroyuki KyushimaHideki ShimoiHiroyuki SugiyamaHitosha KishitaSuenori KimuraYuji MasudaTakayuki Ohmura
    • H01J43/04
    • H01J43/06
    • The present invention relates to a photomultiplier having a fine configuration capable of realizing stable detection accuracy. The photomultiplier has a housing whose inside is maintained vacuum, and a photocathode, an electron-multiplier section, and an anode are disposed in the housing. In particular, one or more control electrodes disposed in an internal space of the housing which surrounds the electron-multiplier section and the anode are electrically connected via one or more connection parts extending from an electron emission terminal of the electron-multiplier section. In this configuration, due to a voltage, instead of the applying between an electron entrance terminal and the electron emission terminal of the electron-multiplier section, being applied between the electron entrance terminal and the control electrodes, an electric potential gradient which is increased gradually from the photocathode side toward the anode side is formed in the electron-multiplier section, and a sufficient electric potential difference is provided between the electron emission terminal of the electron-multiplier section and the anode, which makes it possible to obtain stable detection accuracy.
    • 本发明涉及具有能够实现稳定的检测精度的精细结构的光电倍增管。 光电倍增管具有内部保持真空的壳体,并且光电阴极,电子倍增器部分和阳极设置在壳体中。 特别地,设置在外壳的内部空间中的一个或多个控制电极,其围绕电子倍增器部分和阳极通过从电子倍增器部分的电子发射端延伸的一个或多个连接部分电连接。 在该结构中,由于电压而不是在电子入射端子和电子倍增器部分的电子发射端子之间施加,而被施加在电子入射端子和控制电极之间,逐渐增加的电位梯度 在电子倍增部形成从光电阴极侧朝向阳极侧,在电子倍增部的电子发射端与阳极之间设置充分的电位差,能够得到稳定的检测精度。
    • 7. 发明授权
    • Electron multiplier
    • 电子倍增器
    • US5616987A
    • 1997-04-01
    • US560122
    • 1995-11-17
    • Takayuki OhmuraTomoyuki OkadaHiroyuki KyushimaYousuke Oohashi
    • Takayuki OhmuraTomoyuki OkadaHiroyuki KyushimaYousuke Oohashi
    • H01J43/22H01J43/06H01J43/20
    • H01J43/06
    • A mesh electrode 9 is provided over an incident opening 7a of the electron multiplication portion 6. In the electron multiplication portion 6, a dynode group Dy is located downstream of a first dynode Dy1 for multiplying electrons supplied from the first dynode Dy1. The dynode group Dy is provided in the vicinity of the curvature center of the first dynode Dy1. A plate electrode 10 and a mesh electrode 9 are supplied with a potential intermediate between the potentials applied to the first dynode Dy1 and applied to the dynode group Dy. Accordingly, the electric field formed due to the potential difference between the first dynode Dy1 and the dynode group Dy is surrounded by the intermediate potentials. The electric field is therefore uniformly distributed over the region from the vicinity of the first dynode Dy1 toward the dynode group Dy.
    • 网电极9设置在电子倍增部6的入射开口7a的上方。在电子倍增部6中,倍增极组Dy位于第一倍增电极Dy1的下游,用于乘以从第一倍增电极Dy1提供的电子。 倍增极组Dy设置在第一倍增电极Dy1的曲率中心附近。 平板电极10和网状电极9在施加到第一倍增电极Dy1的电位和施加到倍增极组Dy之间的电位之间被提供。 因此,由于第一倍增电极Dy1和倍增极组Dy之间的电位差而形成的电场被中间电位包围。 因此,电场均匀分布在从第一倍增极Dy1的附近朝向倍增极组Dy的区域。
    • 9. 发明授权
    • Electron tube
    • 电子管
    • US07176429B2
    • 2007-02-13
    • US10571292
    • 2004-09-09
    • Motohiro SuyamaHiroyuki KyushimaYasuharu NegiAtsuhito FukasawaYoshihiko KawaiYasuyuki EgawaAtsushi UchiyamaSuenori Kimura
    • Motohiro SuyamaHiroyuki KyushimaYasuharu NegiAtsuhito FukasawaYoshihiko KawaiYasuyuki EgawaAtsushi UchiyamaSuenori Kimura
    • H01J40/16
    • H01J40/16H01J9/233
    • In an electron tube, one end of an insulating tube is protruded toward the inside of an envelope, and an avalanche photodiode (APD) is provided on the one end of the insulating tube. Another end of the insulating tube is connected to an outer stem of the envelope. Alkali sources are provided inside the envelope. The alkali sources are disposed inside the envelope and generates alkali metal vapor to thereby form a photocathode on a predetermined part of the internal surface of the envelope. The alkali sources and insulating tube are isolated from each other by a separating member. When the electron tube is manufactured, the alkali metal vapor that is generated from the alkali sources is not deposited on the insulating tube due to existence of the separating member. This prevents voltage resistance between the envelope and APD from being decreased and the electrical field in the electron tube from being adversely affected, thereby preventing incident efficiency of electrons to the APD from being decreased.
    • 在电子管中,绝缘管的一端朝向外壳的内侧突出,在绝缘管的一端设置有雪崩光电二极管(APD)。 绝缘管的另一端连接到外壳的外部杆。 信封内提供碱源。 碱源设置在封套内,产生碱金属蒸气,由此在外壳的内表面的规定部分上形成光电阴极。 碱源和绝缘管通过分离构件彼此隔离。 当制造电子管时,由于分离部件的存在,从碱源产生的碱金属蒸气不会沉积在绝缘管上。 这防止了封套和APD之间的电阻降低,并且电子管中的电场受到不利影响,从而防止电子对APD的入射效率降低。