公开(公告)号：US20200350153A1

公开(公告)日：2020-11-05

申请号：US16398964

申请日：2019-04-30

Applicant: Shimadzu Corporation

Inventor： Kei KODERA

IPC: H01J49/42 ,  H01J49/00 ,  H01J43/10

Abstract: Conversion dynodes (CDs) 31 and 32 are respectively provided for ion-ejection ports 21a and 22a facing each other across the central axis C of a linear ion trap (LIT) 2. A shield plate 34 having ion-passage openings 34a is provided between LIT and CDs. A voltage slightly lower than the voltage applied to CDs is applied to the shield plate. Ions ejected from LIT by resonant excitation are accelerated by an electric field between LIT and the shield plate, having their trajectories gradually curved, to eventually reach CDs through the ion-passage openings. Upon receiving the ions, CDs emit electrons. Some electrons may initially move toward the shielding plate, but will be repelled to and detected by an electron multiplier tube 33. CDs can be made of aluminum or similar inexpensive materials, which reduces the cost as well as eliminates the loss of the ions and improves detection sensitivity.

公开(公告)号：US10672597B2

公开(公告)日：2020-06-02

申请号：US16032782

申请日：2018-07-11

Applicant: Thermo Finnigan LLC

Inventor： Joshua T. Maze ,  Edward B. McCauley ,  Scott T. Quarmby

IPC: H01J49/00 ,  H01J43/16 ,  H01J43/10 ,  H01J49/42 ,  H01J49/02 ,  H01J49/40

Abstract: An ion detector includes a first stage dynode configured to receive an ion beam and generate electrons, a photon source arranged to provide photons to the first stage dynode, the photons of sufficient energy to cause the first stage dynode to emit photoelectrons, an electron multiplier configured to receive the electrons or the photoelectrons from the first stage dynode and generate an output proportional to the number of electrons or photoelectrons, and a controller. The controller is configured to receive the output generated in response to the photoelectrons; calculate a gain curve of the detector based on the output; and set a voltage of the electron multiplier or the first stage dynode to achieve a target gain for the ion beam.

公开(公告)号：US10037871B2

公开(公告)日：2018-07-31

申请号：US15858600

申请日：2017-12-29

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Motohiro Suyama ,  Hiroshi Kobayashi ,  Shinya Hattori

IPC: H01J43/10 ,  B32B3/00 ,  B32B9/00 ,  B32B9/04 ,  H01J9/12 ,  H01J43/16 ,  H01J43/24 ,  C23C14/00

CPC classification number: H01J43/10 ,  B32B3/00 ,  B32B9/005 ,  B32B9/04 ,  B32B2457/20 ,  C23C14/00 ,  C23C16/45555 ,  H01J9/125 ,  H01J43/16 ,  H01J43/24

Abstract: 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.

公开(公告)号：US09892892B2

公开(公告)日：2018-02-13

申请号：US15057144

申请日：2016-03-01

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Motohiro Suyama ,  Hiroshi Kobayashi ,  Shinya Hattori

IPC: H01J43/10 ,  H01J9/12 ,  H01J43/16 ,  B32B3/00 ,  H01J43/24 ,  B32B9/00 ,  B32B9/04 ,  C23C14/00

CPC classification number: H01J43/10 ,  B32B3/00 ,  B32B9/005 ,  B32B9/04 ,  B32B2457/20 ,  C23C14/00 ,  C23C16/45555 ,  H01J9/125 ,  H01J43/16 ,  H01J43/24

Abstract: 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.

公开(公告)号：US20160260592A1

公开(公告)日：2016-09-08

申请号：US15057144

申请日：2016-03-01

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Motohiro SUYAMA ,  Hiroshi KOBAYASHI ,  Shinya HATTORI

IPC: H01J43/10 ,  H01J43/16 ,  H01J9/12

CPC classification number: H01J43/10 ,  B32B3/00 ,  B32B9/005 ,  B32B9/04 ,  B32B2457/20 ,  C23C14/00 ,  C23C16/45555 ,  H01J9/125 ,  H01J43/16 ,  H01J43/24

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20160233044A1

公开(公告)日：2016-08-11

申请号：US15029336

申请日：2014-08-08

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takaaki NAGATA ,  Yasumasa HAMANA ,  Kimitsugu NAKAMURA

IPC: H01J1/34 ,  H01J43/10 ,  H01J43/08 ,  H01J1/32 ,  H01J40/06

CPC classification number: H01J1/34 ,  H01J1/32 ,  H01J40/06 ,  H01J43/08 ,  H01J43/10

Abstract: A transmission mode photocathode comprises: an optically transparent substrate having an outside face to which light is incident, and an inside face from which the light incident to the outside face side is output; a photoelectric conversion layer disposed on the inside face side of the optically transparent substrate and configured to convert the light output from the inside face into a photoelectron or photoelectrons; and an optically-transparent electroconductive layer comprising graphene, and disposed between the optically transparent substrate and the photoelectric conversion layer.

Abstract translation: 透射模式光电阴极包括：具有入射光的外表面的光学透明基板和入射到外表面侧的光的内表面; 光电转换层，设置在所述光学透明基板的内表面侧，并且被配置为将从所述内表面输出的光转换为光电子或光电子; 以及包含石墨烯的光学透明导电层，并设置在光学透明基板和光电转换层之间。

公开(公告)号：US20140263995A1

公开(公告)日：2014-09-18

申请号：US13829554

申请日：2013-03-14

Applicant: Schlumberger Technology Corporation

Inventor： Kenneth E. Stephenson

IPC: H01J43/10 ,  G01V11/00

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。

公开(公告)号：US08466413B2

公开(公告)日：2013-06-18

申请号：US13192670

申请日：2011-07-28

Applicant: Masahiro Kotani ,  Takayuki Ohmura ,  Motohiro Suyama ,  Hiroshi Kobayashi

Inventor： Masahiro Kotani ,  Takayuki Ohmura ,  Motohiro Suyama ,  Hiroshi Kobayashi

IPC: H01J49/02 ,  H01J43/10

CPC classification number: G01T1/2006 ,  G01T1/185 ,  G01T1/28

Abstract: An ion detector for detecting positive ions and negative ions, includes a housing provided with an ion entrance to make the positive ions and the negative ions enter, a conversion dynode which is disposed in the housing and to which a negative potential is applied, a scintillator which is disposed in the housing and has an electron incident surface which is opposed to the conversion dynode and into which secondary electrons emitted from the conversion dynode are made incident, a conductive layer which is formed on the electron incident surface and to which a positive potential is applied, and a photodetector which detects light emitted by the scintillator in response to incidence of the secondary electrons.

Abstract translation: 用于检测正离子和负离子的离子检测器包括设置有离子入口以使正离子和负离子进入的壳体，设置在壳体中并且施加负电位的转换倍增电极，闪烁体 其设置在壳体中并且具有与转换倍增电极相对的电子入射表面，并且从转换倍增极发射的二次电子入射到其中;形成在电子入射表面上并且具有正电位的导电层 以及光电检测器，其响应于二次电子的入射而检测由闪烁体发射的光。

公开(公告)号：US07741758B2

公开(公告)日：2010-06-22

申请号：US10560785

申请日：2004-06-16

Applicant: Hiroyuki Hanai ,  Nobuharu Suzuki

Inventor： Hiroyuki Hanai ,  Nobuharu Suzuki

IPC: H01J43/00 ,  H01J43/10

CPC classification number: H01J43/22

Abstract: A venetian blind dynode 5A and metal channel dynodes 5B of a dynode unit 5 are fitted along with insulating spacers (insulating plates) 11 on columns 9 erected on a stem plate 3 that makes up a vacuum container, and since in this state, venetian blind dynode 5A, metal channel dynodes 5B, and insulating spacers (insulating plates) 11 are supported integrally and firmly by columns 9, venetian blind dynode 5A, metal channel dynodes 5B, and insulating spacers (insulating plates) 11 will not undergo inadvertent lateral deviation due to vibration or impact and dynode unit 5 exhibits an excellent anti-vibration effect.

Abstract translation: 倍增极单元5的百叶帘倍增极5A和金属通道倍增电极5B与竖立在构成真空容器的杆板3上的立柱9上的绝缘间隔件（绝缘板）11一起装配，并且由于在该状态下为百叶帘 倍增极5A，金属通道倍增电极5B和绝缘间隔物（绝缘板）11由列9，百叶窗极化极5A，金属通道倍增电极5B和绝缘间隔物（绝缘板）11整体而牢固地支撑，不会由于 振动或冲击，倍增器单元5表现出优异的抗振动效果。

公开(公告)号：US06841935B2

公开(公告)日：2005-01-11

申请号：US10240568

申请日：2001-04-03

Applicant: Hiroyuki Kyushima ,  Akira Atsumi ,  Hideki Shimoi

Inventor： Hiroyuki Kyushima ,  Akira Atsumi ,  Hideki Shimoi

IPC: H01J43/00 ,  H01J43/04 ,  H01J43/22 ,  H01J43/10

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

Abstract: A dynode (8) constituting an electron multiplier or a photomultiplier is provided with eight rows of channels (15) each defined by an outer frame (16) and a partitioning part (17) of the dynode (8). In each channel (15), a plurality of electron multiplying holes (14) are arranged. In specified positions of the outer frame (16) and the partitioning part (17) of the dynode (8), glass receiving parts (21) wider than the outer frame (16) and the partitioning part (17) are provided integrally with the dynode (8). Glass parts (22) are bonded to all the glass receiving parts (21). The glass parts (22) are bonded by applying glass to the glass receiving parts (21) and hardening the glass and each have a generally dome-like convex shape. Each dynode (8) is formed after the dome-like glass part (22) is bonded to the glass receiving part (21).

Abstract translation: 构成电子倍增器或光电倍增管的倍增电极（8）设置有由排列（8）的外框架（16）和分隔部分（17）限定的8行通道（15）。 在每个通道（15）中，布置有多个电子倍增孔（14）。 在倍增极（8）的外框架（16）和分隔部分（17）的指定位置，与外框架（16）和分隔部分（17）相比较宽的玻璃容纳部件（21）与 倍增极（8）。 玻璃部件（22）与所有玻璃接收部件（21）接合。 玻璃部分（22）通过将玻璃施加到玻璃接收部分（21）并使玻璃硬化并且各自具有大致圆顶状的凸起形状而接合。 在圆顶状玻璃部件22接合到玻璃接收部件21之后形成多个倍增极8。