Electron multipliers having improved gain stability

    公开(公告)号:US11948785B2

    公开(公告)日:2024-04-02

    申请号:US18041462

    申请日:2021-08-10

    IPC分类号: H01J43/22 H01J43/12 H01J43/24

    CPC分类号: H01J43/22 H01J43/12 H01J43/24

    摘要: The present invention relates to electron multiplier apparatus of the type used in ion detectors. In one form, the invention is an electron multiplier having two or more electron emissive surfaces, each having a different composition so as to together limit or overcome an acute gain effect on the electron multiplier due to the exposure of the two or more electron emissive surfaces to water molecules. Alternatively, the multiplier may have a single electron emissive surface of mixed composition comprising a first composition component and a second composition component so as to together limit or overcome an acute gain effect on the electron multiplier due to the exposure of the electron emissive surface to water molecules.

    METHOD OF MANUFACTURING ELECTRON MULTIPLIER BODY, PHOTOMULTIPLIER TUBE, AND PHOTOMULTIPLIER
    4.
    发明申请
    METHOD OF MANUFACTURING ELECTRON MULTIPLIER BODY, PHOTOMULTIPLIER TUBE, AND PHOTOMULTIPLIER 有权
    制造电子乘法器体,光电管和照相机的方法

    公开(公告)号:US20160260592A1

    公开(公告)日:2016-09-08

    申请号:US15057144

    申请日:2016-03-01

    IPC分类号: H01J43/10 H01J43/16 H01J9/12

    摘要: A method of manufacturing an electron multiplier body, the method includes a step of preparing a first plate-like member having a surface and a back surface and a pair of second plate-like members, a step of forming, in the first plate-like member, a hole portion reaching from the front surface to the back surface, a step of constituting a laminated body by laminating the first and second plate-like members on each other so that the first plate-like member is interposed between the pair of second plate-like members to form a channel defined by the hole portion in the laminated body, a step of integrating the laminated body, a step of constituting a main body portion by cutting the integrated laminated body so that the channel is open, and a step of forming a resistive layer and a secondary electron multiplication layer on an inner surface of the channel.

    摘要翻译: 一种制造电子倍增器体的方法,该方法包括制备具有表面和背面的第一板状构件和一对第二板状构件的步骤,在第一板状构件 构件,从前表面到后表面的孔部分,通过将第一和第二板状构件彼此层压而构成层压体的步骤,使得第一板状构件插入在一对第二板状构件之间 板状构件以形成由层叠体中的孔部限定的通道,使层叠体一体化的步骤,通过切割一体的层叠体构成主体部的步骤,使得通道开放;以及台阶 在通道的内表面上形成电阻层和二次电子倍增层。

    Probe Assembly for Attaching a Chromatography Device to a Mass Spectrometer
    5.
    发明申请
    Probe Assembly for Attaching a Chromatography Device to a Mass Spectrometer 审中-公开
    用于将色谱装置连接到质谱仪的探针组件

    公开(公告)号:US20160217992A1

    公开(公告)日:2016-07-28

    申请号:US15023528

    申请日:2014-09-17

    IPC分类号: H01J49/04 G01N27/62 G01N30/72

    摘要: A probe assembly is disclosed comprising an inlet for receiving an eluent from a chromatography device; an outlet (120) for delivering the eluent to an ion source of a mass spectrometer; and an attachment device (122) for attaching the outlet to the mass spectrometer. The outlet comprises an electrically conductive capillary (124) and an electrically conductive member (129) surrounding at least part of the electrically conductive capillary (124). The electrically conductive member (129) is arranged to receive a voltage upon connection of the attachment device (122) to the mass spectrometer and the electrically conductive member (129) is arranged to provide an electrical connection from the electrically conductive member (129) to the electrically conductive capillary (124).

    摘要翻译: 公开了一种探针组件,其包括用于从色谱装置接收洗脱液的入口; 用于将洗脱液输送到质谱仪的离子源的出口(120); 以及用于将出口附接到质谱仪的附接装置(122)。 出口包括导电毛细管(124)和围绕导电毛细管(124)的至少一部分的导电构件(129)。 导电构件(129)被布置成在连接装置(122)连接到质谱仪时接收电压,并且导电构件(129)被布置成提供从导电构件(129)到 导电毛细管(124)。

    Discrete dynode detector with dynamic gain control
    6.
    发明授权
    Discrete dynode detector with dynamic gain control 有权
    具有动态增益控制的离散倍增电路检测器

    公开(公告)号:US08735818B2

    公开(公告)日:2014-05-27

    申请号:US12751084

    申请日:2010-03-31

    IPC分类号: H01J43/18 H01J43/04 H01J43/24

    摘要: A novel electron multiplier that regulates in real time the gain of downstream dynodes as the instrument receives input signals is introduced. In particular, the methods, electron multiplier structures, and coupled control circuits of the present invention enable a resultant on the fly control signal to be generated upon receiving a predetermined threshold detection signal so as to enable the voltage regulation of one or more downstream dynodes near the output of the device. Accordingly, such a novel design, as presented herein, prevents the dynodes near the output of the instrument from being exposed to deleterious current pulses that can accelerate the aging process of the dynode structures that are essential to the device.

    摘要翻译: 引入了一种新颖的电子倍增器,实时调节仪器接收输入信号时下游倍增极的增益。 特别地,本发明的方法,电子倍增器结构和耦合控制电路使得能够在接收到预定阈值检测信号时产生飞控制信号,从而使一个或多个下游倍增电极的电压调节 设备的输出。 因此,如本文所提出的这样一种新颖的设计防止了仪器输出附近的倍增电极暴露于有害的电流脉冲,这些有害的电流脉冲可以加速器件所必需的倍增极结构的老化过程。

    PHOTOMULTIPLIER AND ITS MANUFACTURING METHOD
    7.
    发明申请
    PHOTOMULTIPLIER AND ITS MANUFACTURING METHOD 有权
    照相机及其制造方法

    公开(公告)号:US20120274204A1

    公开(公告)日:2012-11-01

    申请号:US13548772

    申请日:2012-07-13

    IPC分类号: H01J43/18 B44C1/22 B32B38/00

    摘要: The present invention relates to a photomultiplier having a structure for making it possible to easily realize high detection accuracy and fine processing, and a method of manufacturing the same. The photomultiplier comprises an enclosure having an inside kept in a vacuum state, whereas a photocathode emitting electrons in response to incident light, an electron multiplier section multiplying in a cascading manner the electron emitted from the photocathode, and an anode for taking out a secondary electron generated in the electron multiplier section are arranged in the enclosure. A part of the enclosure is constructed by a glass substrate having a flat part, whereas each of the electron multiplier section and anode is two-dimensionally arranged on the flat part in the glass substrate.

    摘要翻译: 本发明涉及具有能够容易地实现高检测精度和精细处理的结构的光电倍增管及其制造方法。 光电倍增管包括具有内部保持在真空状态的外壳,而响应于入射光发射电子的光电阴极,电子倍增器部分以级联方式从光电阴极发射的电子和用于取出二次电子的阳极 在电子倍增器部分中产生的电极被布置在外壳中。 外壳的一部分由具有平坦部分的玻璃基板构成,而电子倍增器部分和阳极中的每一个二维地布置在玻璃基板的平坦部分上。

    Discrete Dynode Detector with Dynamic Gain Control
    8.
    发明申请
    Discrete Dynode Detector with Dynamic Gain Control 有权
    具有动态增益控制的离散式Dynode检测器

    公开(公告)号:US20110240857A1

    公开(公告)日:2011-10-06

    申请号:US12751084

    申请日:2010-03-31

    IPC分类号: H01J43/18 H01J40/14

    摘要: A novel electron multiplier that regulates in real time the gain of downstream dynodes as the instrument receives input signals is introduced. In particular, the methods, electron multiplier structures, and coupled control circuits of the present invention enable a resultant on the fly control signal to be generated upon receiving a predetermined threshold detection signal so as to enable the voltage regulation of one or more downstream dynodes near the output of the device. Accordingly, such a novel design, as presented herein, prevents the dynodes near the output of the instrument from being exposed to deleterious current pulses that can accelerate the aging process of the dynode structures that are essential to the device.

    摘要翻译: 引入了一种新颖的电子倍增器,实时调节仪器接收输入信号时下游倍增电极的增益。 特别地,本发明的方法,电子倍增器结构和耦合控制电路使得能够在接收到预定阈值检测信号时产生飞控制信号,从而使一个或多个下游倍增电极的电压调节接近 设备的输出。 因此,如本文所提出的这样一种新颖的设计防止了仪器输出附近的倍增电极暴露于有害的电流脉冲,这些有害的电流脉冲可以加速器件所必需的倍增极结构的老化过程。

    Photomultiplier including an electronic-multiplier section in a housing
    9.
    发明授权
    Photomultiplier including an electronic-multiplier section in a housing 有权
    光电倍增器,包括壳体中的电子倍增器部分

    公开(公告)号:US07880385B2

    公开(公告)日:2011-02-01

    申请号:US11921959

    申请日:2006-06-01

    IPC分类号: H01J43/04 H01J43/18 H01J43/00

    CPC分类号: H01J43/24

    摘要: The present invention relates to a photomultiplier having a fine structure capable of realizing high detection accuracy by effectively suppressing cross talk among electron-multiplier channels. The photomultiplier comprises a housing whose inside is maintained vacuum, and, in the housing, a photocathode, an electron-multiplier section, and anodes are disposed. The electron-multiplier section has groove portions for cascade-multiplying photoelectrons as electron-multiplier channels, and the anodes are constituted by channel electrodes corresponding to the groove portions respectively defined by wall parts. In particular, at least parts of the respective channel electrodes are located in spaces sandwiched between pairs of wall parts defining the corresponding groove portions.

    摘要翻译: 本发明涉及具有能够通过有效地抑制电子倍增器通道之间的串扰来实现高检测精度的精细结构的光电倍增管。 光电倍增管包括其内部保持真空的壳体,并且在壳体中设置光电阴极,电子倍增器部分和阳极。 电子倍增器部分具有用于级联倍增光电子作为电子倍增器通道的槽部分,并且阳极由对应于分别由壁部分限定的槽部分的沟道电极构成。 特别地,各通道电极的至少一部分位于夹在形成相应凹槽部分的一对壁部分之间的空间中。

    Photomultiplier tube, photomultiplier tube unit, and radiation detector
    10.
    发明授权
    Photomultiplier tube, photomultiplier tube unit, and radiation detector 有权
    光电倍增管,光电倍增管单元和辐射探测器

    公开(公告)号:US07495223B2

    公开(公告)日:2009-02-24

    申请号:US11898028

    申请日:2007-09-07

    IPC分类号: H01J43/28

    CPC分类号: H01J43/24 H01J43/28

    摘要: A photomultiplier tube, a photomultiplier tube unit, and a performance-improved radiation detector for increasing a fixing area of a side tube in a faceplate while increasing an effective sensitive area of the faceplate. In the photomultiplier tube, a side face (3c) of the faceplate (3) protrudes outward from an outer side wall (2b) of a metal side tube (2), so that a light receiving area for receiving light passing through a light receiving face (3d) of the faceplate (3) is increased. The overhanging structure of the faceplate (3) is conceived based on a glass refractive index. The overhanging structure is aimed to receive light as much as possible which has not been received before. When the metal side tube (2) is fused to the glass faceplate (3), a fusing method is adopted due to joint between glass and metal. Joint operation between the faceplate (3) and the side tube (2) is reliably ensured. Accordingly, the overhanging structure of the faceplate (3) is effective.

    摘要翻译: 光电倍增管,光电倍增管单元和性能改进的辐射检测器,用于增加面板中的侧管的固定面积,同时增加面板的有效敏感区域。 在光电倍增管中,面板(3)的侧面(3c)从金属侧管(2)的外侧壁(2b)向外突出,从而用于接收通过光接收的光的光接收区域 面板(3)的面(3d)增加。 基于玻璃折射率设计面板(3)的悬垂结构。 突出的结构旨在尽可能接收以前没有收到的光。 当金属侧管(2)熔合到玻璃面板(3)时,由于玻璃和金属之间的接合而采用熔合方法。 可靠地确保面板(3)和侧管(2)之间的联合操作。 因此,面板(3)的突出结构是有效的。