中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

104 records (took 0.014 seconds)

    Apparatus and Methods For Focussing Electrons
    21.
    发明申请
    Apparatus and Methods For Focussing Electrons 审中-公开

    公开(公告)号：US20180218891A1

    公开(公告)日：2018-08-02

    申请号：US15748022

    申请日：2016-07-14

    Applicant: ETP ELECTRON MULTIPLIERS PTY LTD

    Inventor： Richard STRESAU

    IPC: H01J43/10 ,  H01J43/14

    CPC classification number: H01J43/10 ,  H01J43/14

    Abstract: An apparatus for generating and focusing electrons is provided. The apparatus has an emissive material configured to emit an electron, an electron target, and an electrical potential gradient generator configured to generate an electrical potential gradient within the emissive material. The electrical potential gradient is oriented so as to vary from positive to negative in the general direction toward the electron target. In operation, an electron emitted from the emissive materials is deflected away from the emissive material and generally toward the electron target. The apparatus may be incorporated in scientific analytical equipment such as an electron multiplier.

    TIME-OF-FLIGHT MASS SPECTROMETER
    22.
    发明申请
    TIME-OF-FLIGHT MASS SPECTROMETER 审中-公开

    公开(公告)号：US20170294298A1

    公开(公告)日：2017-10-12

    申请号：US15321563

    申请日：2015-12-04

    Applicant: Korea Basic Science Institute

    Inventor： Mo YANG ,  Seung Yong KIM ,  Hyun Sik KIM ,  Wan Seop JEONG

    IPC: H01J49/40 ,  H01J43/10

    CPC classification number: H01J49/40 ,  H01J43/10 ,  H01J43/246 ,  H01J49/08 ,  H01J49/142 ,  H01J49/147

    Abstract: Provided is a time-of-flight mass spectrometer including: an ionization part receiving electron beams to thereby emit ions; a cold electron supply part injecting the electron beams to the ionization part; an ion detection part detecting the ions emitted from the ionization part; and an ion separation part connecting the ionization part and the ion detection part, wherein the cold electron supply part includes a microchannel plate receiving ultraviolet rays to thereby emit the electron beams, the ions emitted from the ionization part pass through the ion separation part to thereby reach the ion detection part, and the ion separation part has a straight tube shape.

    Photomultiplier for well-logging tool
    23.
    发明授权
    Photomultiplier for well-logging tool 有权
    测光仪的光电倍增管

    公开(公告)号：US08853617B1

    公开(公告)日：2014-10-07

    申请号：US13829554

    申请日：2013-03-14

    Applicant: Schlumberger Technology Corporation

    Inventor： Kenneth E. Stephenson

    IPC: G01V5/00 ,  G01V11/00 ,  H01J43/10

    CPC classification number: H01J43/10 ,  E21B47/102 ,  G01V11/002

    Abstract: A photomultiplier includes a tube and plurality of dynodes within the tube and including at least one first dynode and at least one second dynode. A respective insulator is between adjacent pairs of dynodes. The at least one first dynode includes a conductive outer ring and a medial conductive member coupled to the conductive outer ring in spaced relation therefrom. The at least one second dynode includes a conductive outer ring and a conductive inner ring supported within the conductive outer ring.

    Abstract translation: 光电倍增管包括管和管内的多个倍增电极，并且包括至少一个第一倍增电极和至少一个第二倍增电极。 相应的绝缘体在相邻的倍增电极对之间。 所述至少一个第一倍增电极包括导电外环和与所述导电外环以间隔开的关系连接的中间导电构件。 所述至少一个第二倍增电极包括导电外环和支撑在所述导电外环内的导电内环。

    Electron-multiplier and photo-multiplier having dynodes with partitioning parts
    24.
    发明授权
    Electron-multiplier and photo-multiplier having dynodes with partitioning parts 有权
    具有倍增极的电子倍增器和光电倍增器具有分隔部分

    公开(公告)号：US07042155B2

    公开(公告)日：2006-05-09

    申请号：US11246528

    申请日：2005-10-11

    Applicant: Hiroyuki Kyushima ,  Akira Atsumi ,  Hideki Shimoi

    Inventor： Hiroyuki Kyushima ,  Akira Atsumi ,  Hideki Shimoi

    IPC: H01J43/04 ,  H01J43/10

    CPC classification number: H01J31/507 ,  H01J43/045 ,  H01J43/22

    Abstract: A dynode constituting an electron multiplier or a photomultiplier may be provided with eight rows of channels each defined by an outer frame and a partitioning part of the dynode. In each channel, a plurality of electron multiplying holes may be arranged. In specified positions of the outer frame and the partitioning part of the dynode, glass receiving parts wider than the outer frame and the partitioning part may be provided integrally with the dynode. Glass parts may be bonded to all the glass receiving parts. The glass parts may be bonded by applying glass to the glass receiving parts and hardening the glass and each may have a generally dome-like convex shape. Each dynode may be formed after the dome-like glass part may be bonded to the glass receiving part.

    Abstract translation: 构成电子倍增器或光电倍增管的倍增电极可以设置有八排通道，每个通道由倍增极的外框和分隔部分限定。 在每个通道中，可以布置多个电子倍增孔。 在外框的指定位置和倍增极的分隔部分中，可以与倍增极一体地设置比外框宽和分隔部宽的玻璃容纳部。 玻璃部件可以结合到所有的玻璃接收部件。 玻璃部件可以通过将玻璃施加到玻璃接收部分并使玻璃硬化，并且可以具有大致圆顶状的凸起形状。 每个倍增极可以在圆顶状玻璃部分可以结合到玻璃接收部分之后形成。

    Compact low-noise dynodes incorporating semiconductor secondary electron emitting materials
    26.
    发明授权
    Compact low-noise dynodes incorporating semiconductor secondary electron emitting materials 失效
    结合半导体二次电子发射材料的紧凑型低噪声倍增电极

    公开(公告)号：US5680008A

    公开(公告)日：1997-10-21

    申请号：US417010

    申请日：1995-04-05

    Applicant: George R. Brandes ,  John B. Miller

    Inventor： George R. Brandes ,  John B. Miller

    IPC: H01J1/32 ,  H01J43/10 ,  H01J43/18

    CPC classification number: H01J43/10 ,  H01J1/32

    Abstract: This invention relates to electron emitting semiconductor materials for use in dynodes, dynode devices incorporating such materials, and methods of making the dynode devices. In particular, the invention relates to emissive materials having an electron affinity that is negative and which have low resistivity. The invention also relates to electronic devices such as electron multipliers, ion detectors, and photomultiplier tubes incorporating the dynodes comprising the materials, and to methods for fabricating the electronic devices. The secondary electron emitters of the present invention comprise wide bandgap semiconductor films selected from diamond, AlN, BN, Ga.sub.1-y Al.sub.y N where 0.ltoreq.y.ltoreq.1 and (AlN).sub.x (SiC).sub.1-x where 0.2.ltoreq.x.ltoreq.1. The films are preferably single crystal or polycrystalline. The films may be continuous or patterned.

    Abstract translation: 本发明涉及用于倍增极的电子发射半导体材料，结合这种材料的倍增极装置以及制造倍增极装置的方法。 特别地，本发明涉及电子亲和力为负的且具有低电阻率的发射材料。 本发明还涉及电子装置，例如电子倍增器，离子检测器和结合包含材料的倍增电极的光电倍增管，以及用于制造电子装置的方法。 本发明的二次电子发射体包括选自金刚石，AlN，BN，Ga1-yAlyN，其中0≤y≤1和（AlN）x（SiC）1-x的宽带隙半导体膜，其中0.2 < x

    Photomultiplier tube having a grid type of dynodes
    28.
    发明授权
    Photomultiplier tube having a grid type of dynodes 失效
    具有网格型倍增电极的光电倍增管

    公开(公告)号：US5254906A

    公开(公告)日：1993-10-19

    申请号：US744739

    申请日：1991-08-14

    Applicant: Suenori Kimura

    Inventor： Suenori Kimura

    IPC: H01J43/10 ,  H01J43/22 ,  H01J43/18

    CPC classification number: H01J43/22

    Abstract: An electron multiplier tube including a grid type of plural dynode arrays arranged in a first direction with a multistage structure for successively multiplying electrons incident thereto and an anode provided below the multistage structure of dynode arrays for collecting the multiplied electrons to output an amplified electrical signal, each of the dynode arrays including plural rod-shaped dynode elements arranged in a second direction and a mesh electrode provided over each of the dynode arrays for providing an equipotential, wherein the multistage structure of dynode arrays includes at least one group of neighboring dynode arrays whose dynode elements are arranged so as to be aligned with one another in the first direction without displacement. Each of the dynode elements has a substantially isosceles trapezoid section, both side legs of the trapezoid being slightly inwardly curved to effectively receive the incident electrons which have been emitted from a dynode array at an upper stage.

    Photomultiplier tube which is insensitive to high magnetic fields
    30.
    发明授权
    Photomultiplier tube which is insensitive to high magnetic fields 失效
    对高磁场不敏感的光电倍增管

    公开(公告)号：US4623785A

    公开(公告)日：1986-11-18

    申请号：US611264

    申请日：1984-05-17

    Applicant: Pierre L'hermite

    Inventor： Pierre L'hermite

    IPC: H01J43/08 ,  H01J43/10 ,  H01J43/16 ,  H01J40/14 ,  H01J43/04

    CPC classification number: H01J43/16

    Abstract: A photomultiplier tube which is insensitive to high magnetic fields comprises a photocathode deposited on a transparent window at the end of an insulating casing. The multiplier tube comprises a single amplifier stage comprising a dynode. The dynode is a metallic sheet with a circumference substantially surrounding the photocathode. A layer of a secondary emissive material is provided on the inner face of the dynode. An anode is formed of a metallic grid which is homeomorphous to the surface of the dynode. The anode is placed parallel to and at a short distance from the inside surface of the dynode.

    Abstract translation: 对高磁场不敏感的光电倍增管包括沉积在绝缘壳体端部的透明窗口上的光电阴极。 乘法器管包括包括倍增电极的单个放大器级。 倍增极是具有围绕光电阴极的圆周的金属片。 二次发射材料层设置在倍增极的内表面上。 阳极由金属网格形成，其与倍增极的表面是同相的。 阳极平行于距离倍增极的内表面距离较短的距离。

Patent Agency Ranking