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    Interference photocathode
    71.
    发明授权
    Interference photocathode 失效
    干涉光电阴极

    公开(公告)号：US5311098A

    公开(公告)日：1994-05-10

    申请号：US888083

    申请日：1992-05-26

    Applicant: John F. Seely ,  William R. Hunter

    Inventor： John F. Seely ,  William R. Hunter

    IPC: H01J1/34 ,  H01J43/08

    CPC classification number: H01J1/34

    Abstract: An interference photocathode includes a reflective substrate and interference layers disposed on said reflective substrate for selectively enhancing a first photoelectric yield of said photocathode when irradiated by radiation having a first wavelength relative to a second photoelectric yield of said photocathode when irradiated by radiation having a second wavelength. In one embodiment, the interference layers include a dielectric layer having a wavelength dependent effective thickness disposed on said reflective substrate such that said effective thickness for radiation having said first wavelength is an odd multiple of a quarter of said first wavelength and said effective thickness for radiation having said second wavelength is an even multiple of a quarter of said second wavelength. In another embodiment, the dielectric layer includes a layer of electrically conductive material and a dielectric material disposed between said layer of electrically conductive material and said reflective substrate.

    Abstract translation: 干涉光电阴极包括反射基板和设置在所述反射基板上的干涉层，用于当用具有第二波长的辐射照射时相对于所述光电阴极的第二光电产量照射具有第一波长的辐射来选择性地增强所述光电阴极的第一光电收益 。 在一个实施例中，干涉层包括具有设置在所述反射基板上的波长相关有效厚度的电介质层，使得具有所述第一波长的辐射的所述有效厚度是所述第一波长的四分之一的奇数倍和所述辐射的有效厚度 具有所述第二波长的是所述第二波长的四分之一的偶数倍。 在另一个实施例中，电介质层包括导电材料层和设置在所述导电材料层和所述反射衬底之间的电介质材料。

    Hollow cathode
    72.
    发明授权
    Hollow cathode 失效
    空心阴极

    公开(公告)号：US4633129A

    公开(公告)日：1986-12-30

    申请号：US729028

    申请日：1985-04-30

    Applicant: Jerome J. Cuomo ,  Harold R. Kaufman ,  Stephen M. Rossnagel

    Inventor： Jerome J. Cuomo ,  Harold R. Kaufman ,  Stephen M. Rossnagel

    IPC: H01J37/077 ,  H01J1/02 ,  H01J43/08

    CPC classification number: H01J1/025

    Abstract: A long life high current density hollow cathode electron beam source for use in various E-beam apparatus which uses an ionizable gas within the hollow cathode. Bombardment of an electron emissive surface within the hollow cathode by energetic gas ions causes electrons to be emitted by secondary emission rather than thermionic emission effects. Once initialized by an external ionization voltage the device is essentially self sustaining and operates near room temperature, rather than at thermionic emission temperatures, and with reduced voltages.

    Abstract translation: 一种长寿命的高电流密度中空阴极电子束源，用于各种电子束装置，其使用空心阴极内的可电离气体。 通过能量气体离子轰击空心阴极内的电子发射表面，可以通过二次发射而不是热离子发射效应来发射电子。 一旦通过外部电离电压初始化，器件基本上是自我维持的，并且在室温附近操作，而不是在热离子发射温度下并且具有降低的电压。

    Electron tube
    79.
    发明授权
    Electron tube 有权

    公开(公告)号：US12142470B2

    公开(公告)日：2024-11-12

    申请号：US18109388

    申请日：2023-02-14

    Applicant: HAMAMATSU PHOTONICS K.K.

    Inventor： Yasuyuki Egawa ,  Atsuhito Fukasawa ,  Suenori Kimura ,  Takayasu Nagasawa ,  Shunsuke Kobayashi

    IPC: H01J43/28 ,  H01J43/08

    Abstract: An electron tube includes a photoelectric conversion unit, an electron detection unit configured to receive a photoelectrons from the photoelectric conversion unit, a gate electrode disposed between the photoelectric conversion unit and the electron detection unit, and a housing configured to accommodate the photoelectric conversion unit, the electron detection unit, and the gate electrode. The housing has a lid portion to which the photoelectric conversion unit is fixed and which constitutes one end side of the housing. The gate electrode includes a main body portion that control passage of the photoelectrons by applying a voltage, and a power supply part that supports the main body portion so as to be spaced apart from the photoelectric conversion unit and applies a voltage to the main body portion. The power supply part is held by the lid portion.

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