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    Method of surface preparation of niobium
    14.
    发明申请
    Method of surface preparation of niobium 失效
    铌表面处理方法

    公开(公告)号：US20020132565A1

    公开(公告)日：2002-09-19

    申请号：US09810098

    申请日：2001-03-19

    Inventor： Triveni Srinivasan-Rao ,  John F. Schill

    IPC: B24B001/00

    CPC classification number: H01J9/12 ,  H01J2201/3425 ,  H05H7/20

    Abstract: The present invention is for a method of preparing a surface of niobium. The preparation method includes polishing, cleaning, baking and irradiating the niobium surface whereby the resulting niobium surface has a high quantum efficiency.

    Abstract translation: 本发明是制备铌表面的方法。 制备方法包括抛光，清洗，烘烤和照射铌表面，由此所得的铌表面具有高的量子效率。

    Enhanced sensitivity photodetector having a multi-layered, sandwich-type construction
    16.
    发明授权
    Enhanced sensitivity photodetector having a multi-layered, sandwich-type construction 失效
    具有多层夹心式结构的增强型灵敏度光电探测器

    公开(公告)号：US4839511A

    公开(公告)日：1989-06-13

    申请号：US149707

    申请日：1988-01-29

    Applicant: James C. Thompson ,  Uzi J. Even ,  Chi-Woo Kim

    Inventor： James C. Thompson ,  Uzi J. Even ,  Chi-Woo Kim

    IPC: H01J1/34 ,  H01J1/78 ,  H01J9/12 ,  H01J29/36

    CPC classification number: H01J29/36 ,  H01J1/34 ,  H01J1/78 ,  H01J9/12 ,  H01J9/233 ,  H01J2201/3425

    Abstract: A photoconductive member is provided with increased sensitivity to radiation incident thereupon and with increased photo-yield in response thereto by means of a multi-layered, sandwich-type construction based upon the provision of successive layers of sensitizing material over corresponding successive layers of conducting material. The photoconductive member comprises at least two composite layers formed one above the other on an insulating substrate, each composite layer comprising a first layer of material capable of conducting charge and a second layer of material comprising polar molecules disposed upon the charge-conducting material layer in such a manner that successive layers of polar molecules are adsorbed and retained in an oriented fashion on successive layers of the charge-conducting material. In combination, the alternating layers of charge-conducting material and polar molecules increase photo-yield in response to a given quantum of incident radiation and also increase the range of wavelength of incident radiation to which the photoconductive member is responsive. The sandwich-type construction permits photoconductor sensitivity to be increased as a function of the number of layers of conducting material and polar molecules used to form the photoconductive surface. The multi-layered construction also exhibits reduced sensitivity to the degrading effects of impurities, is adapted to convenient fabrication, and exhibits extended lifetime.

    Abstract translation: 光电导元件被提供对其入射的辐射的增加的灵敏度，并且通过基于在相应的连续的导电材料层上提供连续的敏化材料层的多层夹层结构，响应于此而增加的光产率 。 光电导元件包括至少两层复合层，绝缘基板上形成一层复合层，每个复合层包括能够导电的第一层材料和第二层材料，该第二层材料包含位于导电材料层上的极性分子 这样一种方式使连续的极性分子层被吸附并以取向形式保持在导电材料的连续层上。 组合地，电荷传导材料和极性分子的交替层响应于给定的入射辐射量而增加光产率，并且还增加光电导元件响应的入射辐射的波长范围。 夹层结构允许光电导体灵敏度随着用于形成光导表面的导电材料和极性分子的层数的增加而增加。 多层结构对于杂质的降解效果也表现出降低的敏感性，适于方便的制造，并且具有延长的使用寿命。

    Masked photocathode with first and second metallic patterns
    18.
    发明授权
    Masked photocathode with first and second metallic patterns 失效
    带有第一和第二金属图案的掩蔽光栅

    公开(公告)号：US3585433A

    公开(公告)日：1971-06-15

    申请号：US3585433D

    申请日：1968-12-18

    Applicant: WESTINGHOUSE ELECTRIC CORP

    Inventor： O'KEEFE TERENCE W ,  MORRIS JEROME R

    IPC: H01J1/34 ,  H01J40/06 ,  H01J39/16

    CPC classification number: H01J40/06 ,  H01J1/34 ,  H01J2201/3425 ,  Y10T428/24058

    Abstract: A masked photocathode is provided having on a radiation transmissive support a mask pattern of a material that absorbs or reflects sensitizing radiation, particularly in the ultraviolet. In one form, the mask is formed in a process that includes at least partial oxidation of a metal layer pattern. Alternatively, a mask pattern that blocks all radiation with high reflectivity may be formed by employing a metal with a subsequent insulating layer, such as of an oxide of the metal or a separately deposited insulator, for protection from the photocathode. In another form the photoemissive layer may be deposited directly on the transmissive support and have on its surface a pattern of organic material to provide the mask for electrons on the target side of the cathode as well as to prevent any radiation reflected from the target from impinging on areas from which photoemission is not desired.

    Photoelectron emitting member and method of electrically charging fine particles with photoelectrons
    20.
    发明授权
    Photoelectron emitting member and method of electrically charging fine particles with photoelectrons 失效
    光电子发射元件及其电子电荷精细粒子的方法

    公开(公告)号：US5154733A

    公开(公告)日：1992-10-13

    申请号：US664853

    申请日：1991-03-05

    Applicant: Toshiaki Fujii ,  Kazuhiko Sakamoto

    Inventor： Toshiaki Fujii ,  Kazuhiko Sakamoto

    IPC: B03C3/38 ,  G01N15/02 ,  H01J1/34

    CPC classification number: H01J1/34 ,  B03C3/383 ,  G01N15/0266 ,  H01J2201/3425

    Abstract: A photoelectron emitting member and method of electrically charging fine particles with photoelectrons, wherein the member includes a matrix that is at least composed of a material capable of transmitting ultraviolet rays and a material that is provided on the surface of the matrix or in its neighborhood and which emits photoelectrons upon irradiation with ultraviolet rays or sunlight. The member emitting photoelectrons upon irradiation with ultraviolet rays or sunlight is disposed in an electric field from the side opposite to the irradiated side. The member permits efficient utilization of the energy of ultraviolet rays. When sunlight is applied to the member to have it emit photoelectrons, particles can be electrically charged with energy costs being reduced to substantially zero.

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