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JP4848363B2 |
An ion detector for a mass spectrometer is provided wherein a mask ( 10 ) is provided between a first microchannel plate ( 2 a) and a second microchannel plate ( 2 b). The mask ( 10 ) prevents ion arrival events causing a cloud of second...
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JP4837829B2 |
A photomultiplier tube circuit with reduced power consumption comprising a photomultiplier tube having a plurality of dynodes, charging circuitry for providing charge to the plurality of dynodes and an oscillator for providing a high vol...
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JP4832898B2 |
To provide an electron tube capable of improving light detection sensitivity while securing response speed. The electron tube 1 is provided with a housing 2 of which inside is maintained in vacuum, a photoelectric surface 10 formed on th...
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JP4819437B2 |
The present invention relates to a photomultiplier having a fine structure capable of realizing high multiplication efficiency. The photomultiplier comprises a housing whose inside is maintained vacuum, and, on a device mounting surface ...
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JP4804172B2 |
A vacuum vessel is configured by hermetically joining a faceplate (13) to one end of a side tube (15) and a stem (29) to the other end via a tubular member (31). A photocathode (14), a focusing electrode (17), dynodes (Dy1-Dy12), a drawi...
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JP4804173B2 |
A vacuum vessel is configured by hermetically joining a faceplate (13) to one end of a side tube (15) and a stem (29) to the other end via a tubular member (31). A photocathode (14), a focusing electrode (17), dynodes (Dy1-Dy12), a drawi...
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JP4790331B2 |
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JP2011525294A |
A microchannel plate includes a substrate defining a plurality of channels extending from a top surface of the substrate to a bottom surface of the substrate. A resistive layer is formed over an outer surface of the plurality of channels...
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JP4762719B2 |
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 enclosur...
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JP4756604B2 |
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JP4754805B2 |
A holding member or a base member, through which stem pins are passed and one surface of which is held by the holding member, is joined to the stem pins and the holding member by fusion by the melting of the base member. Upon melting, a ...
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JP4753303B2 |
A vacuum vessel (18) is configured by hermetically joining a faceplate (13) with one end of a side tube (15) and hermetically joining a stem (50) with another end via a ring-shaped side tube (37). Within the vacuum vessel (18), a focus e...
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JP4754804B2 |
The edges of portions of a base member that are joined to stem pins are arranged as bottom surfaces of recesses formed in the stem so that the stem pins are joined to the base member at gradual angles and so that even when a bending forc...
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JP4744844B2 |
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JP4740422B2 |
A particle detector switchable from an ion detector to an electron detector includes an ion-to-electron converter and a scintillator detector. With one set of voltages on the components, the converter has minimal impact on the electron t...
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JP4722053B2 |
The present invention provides a mega-boule for use in fabricating microchannel plates (MCPs). The mega-boule includes a cross-sectional surface having at least first, second and third areas, each area occupying a distinct portion of the...
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JP4711420B2 |
A vacuum vessel is configured by hermetically joining a faceplate (13) to one end of a side tube (15) and a stem (29) to the other end via a tubular member (31). A photocathode (14), a focusing electrode (17), dynodes (Dy1-Dy12), a drawi...
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JP4708117B2 |
The present invention relates to a photomultiplier having a fine configuration capable of realizing stable detection accuracy. The photomultiplier has a housing whose inside is maintained vacuum, and a photocathode, an electron-multiplie...
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JP4708118B2 |
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 who...
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JP4699134B2 |
A photomultiplier tube 1 is an electron tube comprising an envelope 5 including a frame 3b having at least one end part formed with an opening and an upper substrate 2 airtightly joined to the opening, and a photocathode 6 contained with...
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JP4698227B2 |
The invention includes a microchannel plate for an image intensifier tube, in which the plate has multiple microchannels extending in a longitudinal dimension between transverse surfaces of the plate. Each microchannel includes a first p...
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JP2011517050T |
In order that the manufacturing method of a gas electron multiplier tube may form a hole (18) through the process and the 1st metal layer which manufacture the blank sheet (28) containing the insulation sheet (12) which has the 1st and 2...
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JP4689234B2 |
Onto a base member, through which stem pins are passed and holding members are to be joined to the respective surfaces thereof, the stem pins and the holding members are joined by fusion by melting of the base member to arrange a stem wi...
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JP4689421B2 |
To provide an electrically-charged particle detector which adjusts a field pattern so that a flight trajectory of an electrically-charged particle may be maintained in a desirable state even while a different voltage is applied. An MCP g...
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JP4686470B2 |
An electron sensing device includes a cathode for providing a source of electrons, and an anode disposed opposite to the cathode for receiving electrons emitted from the cathode. The anode includes a textured surface for reducing halo in...
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JP4686471B2 |
A mega-boule is used in fabricating microchannel plates (MCPs). The mega-boule has a cross-sectional surface including an island section, an inner perimeter section and an outer perimeter section, each section occupying a distinct portio...
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JP2011513076A |
A device and/or method mount and affix a microchannel plate in a micro system. The device and/or method has at least one conductive spring structure, formed to accept a microchannel plate, for aligning, fixing and making electrical conta...
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JP2011513920A |
A method of fabricating a microchannel plate includes defining a plurality of pores extending from a top surface of a substrate to a bottom surface of the substrate where the plurality of pores has a resistive material on an outer surfac...
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JP2011513921A |
A microchannel plate includes a substrate defining a plurality of pores extending from a top surface of the substrate to a bottom surface of the substrate. The plurality of pores includes a resistive material on an outer surface that for...
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JP4672573B2 |
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JP4647955B2 |
Provided are a photocathode plate capable of stably achieving a high sensitive property, and an electron tube using such a photocathode plate. In a photomultiplier tube 1 , an insulating layer 63 is formed between a semiconductor electro...
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JP4640881B2 |
A photomultiplier excellent in vibration resistance and improved in pulse linearity characteristic and time-response. The fourth, and sixth to ninth dynodes (Dy4, Dy6 to Dy9) have a similar shape to that of the second dynode (Dy2). The t...
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JP2011505656A |
A mass spectrometer is disclosed comprising a Gas Electron Multiplier ion detector. The ion detector comprises three gas electron multiplier stages GEM1, GEM2, GEM3 wherein a counter electrode (12) is arranged adjacent the first electron...
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JP4639379B2 |
A replaceable, electronically-isolated, MCP-based spectrometer detector cartridge with enhanced sensitivity is disclosed. A mass detector is electro-optically isolated from a charge collector with an electron multiplier for converting a ...
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JP4634209B2 |
To provide an electron detection device capable of restraining increase of dark current. The electron detection device 1 has a photoelectric face plate 10 having a photoelectric face 11, an electron shielding member 60 limiting a path of...
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JP4627431B2 |
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JP4627470B2 |
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JP2011014481A |
To automatically set an appropriate detector voltage combining an accuracy of counting with a long life of a detector even when a plateau region is not clear in a relation between the voltage of the detector and the counted value in the ...
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JP4611562B2 |
Light resulting from chemiluminescence inside a reaction chamber 4 is transmitted through a light transmitting window 3, a large part of the light is made incident on a photoelectric surface 71 of a photomultiplier tube 2 to generate pho...
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JP4608572B2 |
In an electron beam detector, a light guide optically couples a fluorescence emitting surface of the compound semiconductor substrate to a light incident surface of the photodetector, and physically connects the compound semiconductor su...
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JP2011501189A |
A fiberized single photon sensitive spectrometer on a 32-channel PMT sensor is highly sensitive with broad detection dynamic range. The spectrometer enables accurate and high speed detection, identification and analysis of biological sam...
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JP4607866B2 |
An image intensifier and electron multiplier therefor is disclosed. Photons of an image impinge a photo-cathode that converts the photons to electrons. An electron multiplier multiplies the electrons from the photo-cathode to create an i...
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JP2010286316A |
To provide an optical detector which detects light such as ultraviolet rays, infrared rays, and visible rays with high sensitivity and has excellent positional resolution and counting rate characteristics.The optical detector 101 include...
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JP4593238B2 |
In a photomultiplier, a ring-like side tube is not interposed between a side tube and a stem in the radial direction, and the side tube is joined to the ring-like side tube in a state of being directly capped onto a portion of the stem t...
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JP4589041B2 |
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JP4573407B2 |
A photomultiplier that prevents rattling between the dynodes and the base plates, the parts being fixed securely to achieve excellent vibration resistance. The dynode of the second stage (Dy 2 ) includes a curved surface (Dy 2 A) having ...
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JP4570132B2 |
An apparatus for detecting X-rays comprises a scintillator which emits a plurality of photoelectrons upon being impacted by an X-ray photon. The photoelectrons are amplified in a gas electron multiplier and the resultant photoelectrons a...
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JP4562844B2 |
In the polycrystal diamond thin film in accordance with the present invention, the average particle size is at least 1.5 mu m and, in a Raman spectrum obtained by Raman spectroscopy, a peak intensity near a wave number of 1580 cm<-1> has...
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JP4550976B2 |
A photocathode and an electron tube in which the photocathode plate can be securely fixed without using any adhesive. Even under the severe condition that a high vibration resistance is required or thermal stress occurs because of great ...
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JP4549497B2 |
A photomultiplier tube excellent in vibration resistance and having an anode with good pulse linearity characteristic. The photomultiplier tube has a mesh anode (A) composed of an anode frame (A11) and a mesh electrode (A12) supported an...
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