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公开(公告)号：US20240222103A1
公开(公告)日：2024-07-04
申请号：US18569773
申请日：2022-06-16
Applicant: DH Technologies Development Pte. Ltd.
Inventor： Takashi BABA , Keqin CHEN
CPC classification number: H01J49/0054 , H01J49/022 , H01J49/08 , H01J49/36
Abstract: In one aspect, an electron capture dissociation (ECD) device for use in a mass spectrometer is disclosed, which is configured to trap precursor ions and cause the trapped precursor ions (or a portion thereof) to exit the ion trap, via radial excitation thereof by a resonant AC voltage, such that the released precursor ions can enter an ion-electron interaction region in which at least a portion of the precursor ions undergo fragmentation via interaction with an electron beam. The fragment ions are trapped and prevented from undergoing multiple dissociations. Once the fragmentation of the precursor ions is completed and/or after a predefined period, the fragment ions are released from the ECD to be received by downstream components of the mass spectrometer in which the ECD device is incorporated.
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公开(公告)号：US20180315589A1
公开(公告)日：2018-11-01
申请号：US15770018
申请日：2015-10-23
Applicant: SHIMADZU CORPORATION
Inventor： Tomoyuki OSHIRO
CPC classification number: H01J49/401 , H01J49/0009 , H01J49/08
Abstract: An orthogonal acceleration time-of-flight (TOF) mass spectrometer in which an ion injected into an orthogonal acceleration area is periodically accelerated in a direction orthogonal to a direction of the injection and thereby ejected into a flight space. The mass spectrometer includes: an orthogonal acceleration electrode; a voltage supplier for applying a fixed level of voltage to the orthogonal acceleration electrode with a predetermined period; a TOF determiner for detecting an ion after a completion of a flight of the ion within the flight space, and determining the TOF of the ion; a storage section in which mass determination information defining a relationship between the TOF and mass-to-charge ratio of the ion depending on the period of the applied voltage is stored; and a mass-to-charge-ratio determiner for determining the mass-to-charge ratio of an ion from the TOF of the ion determined by the TOF determiner, based on the mass determination information.
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公开(公告)号：US20180277348A1
公开(公告)日：2018-09-27
申请号：US15996033
申请日：2018-06-01
Applicant: Agilent Technologies, Inc.
Inventor： Harry F. Prest , Mingda Wang , Jeffrey T. Kernan
CPC classification number: H01J49/08 , H01J49/0031 , H01J49/147
Abstract: Mass spectrometry is performed utilizing an electron ionization (EI) source. The EI source ionizes a sample at different electron energies, including below and above 70 eV. The EI source may be utilized for soft ionization as well as hard ionization. The value of the electron energy may be selected so as to favor the formation of molecular ions or other ions of high analytical value. The ion source may be an axial ion source.
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公开(公告)号：US10062554B2
公开(公告)日：2018-08-28
申请号：US15824281
申请日：2017-11-28
Inventor： Benjamin R. Conley
Abstract: Exemplary metamaterial photocathodes enable detection of light from visible through long wave infrared wavelengths. Metamaterial stacks, comprising gold, silicon, and cesium-oxide, coupled to a semiconductor allow hot electrons to efficiently enter a vacuum. The hot electrons are multiplied in a multichannel plate and directly through another vacuum towards a phosphorus screen.
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公开(公告)号：US10037876B2
公开(公告)日：2018-07-31
申请号：US15320953
申请日：2015-12-09
Applicant: Korea Basic Science Institute
Inventor： Seung Yong Kim , Mo Yang , Hyun Sik Kim
CPC classification number: H01J49/08 , H01J49/147 , H01J49/422 , H01J49/424
Abstract: The present invention relates to an electron bean injection control of a mass spectrometer. A mass spectrometer of the present invention includes: a reference waveform generator configured to generate a reference waveform signal having one type of a square wave and a sine wave, a waveform generator configured to generate a sync signal synchronized with the reference waveform signal; an RF module configured to generate an RF voltage signal from the reference waveform signal and apply the RF voltage signal to an RF electrode in the ion trap, an electron beam generator configured to control an operation of an ultraviolet (UV) diode for generating an electron beam injected into the ion trap according to an input control signal, and a control circuit configured to generate the control signal by using the square wave signal.
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Patent Agency Ranking
公开(公告)号：US09520280B2
公开(公告)日：2016-12-13
申请号：US13993316
申请日：2011-12-14
Applicant: Alexander A. Makarov
Inventor： Alexander A. Makarov
CPC classification number: H01J49/282 , H01J49/027 , H01J49/08 , H01J49/38 , H01J49/4245
Abstract: Mass analyzers and methods of ion detection for a mass analyzer are provided. An electrostatic field generator provides an electrostatic field causing ion packets to oscillate along a direction. A pulse transient signal is detected over a time duration that is significantly shorter than a period of the ion oscillation or using pulse detection electrodes having a width that is significantly smaller than a span of ion harmonic motion. A harmonic transient signal is also detected. Ion intensity with respect to mass-to-charge ratio is then identified based on the pulse transient signal and the harmonic transient signal.
Abstract translation: 提供了用于质量分析仪的质量分析仪和离子检测方法。 静电场发生器提供静电场，使离子包沿着一个方向振荡。 在比离子振荡的周期短的持续时间内检测脉冲瞬态信号，或使用具有明显小于离子谐波运动的跨度的宽度的脉冲检测电极。 还检测到谐波瞬态信号。 然后基于脉冲瞬态信号和谐波瞬态信号来识别关于质荷比的离子强度。
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公开(公告)号：US20140374583A1
公开(公告)日：2014-12-25
申请号：US13925470
申请日：2013-06-24
Applicant: Agilent Technologies, Inc.
Inventor： Harry F. Prest , Mingda Wang , Jeffrey T. Kernan
IPC: H01J49/08
CPC classification number: H01J49/08 , H01J49/0031 , H01J49/147
Abstract: Mass spectrometry is performed utilizing an electron ionization (EI) source. The EI source ionizes a sample at different electron energies, including below and above 70 eV. The EI source may be utilized for soft ionization as well as hard ionization. The value of the electron energy may be selected so as to favor the formation of molecular ions or other ions of high analytical value. The ion source may be an axial ion source.
Abstract translation: 使用电子电离（EI）源进行质谱分析。 EI源以不同的电子能量离子化样品，包括低于70 eV以上。 EI源可以用于软电离以及硬质电离。 可以选择电子能量的值，以有利于分子离子或其它具有高分析值的离子的形成。 离子源可以是轴向离子源。
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公开(公告)号：US20110291005A1
公开(公告)日：2011-12-01
申请号：US13205925
申请日：2011-08-09
Applicant: Martin Wüest , Wolfram Knapp
Inventor： Martin Wüest , Wolfram Knapp
IPC: H01J49/04
CPC classification number: H01J49/08 , H01J49/147 , H01J49/16
Abstract: A cathode configuration for emission of electrons has a reaction zone connected to an entrance opening for the supply of neutral particles. The opening communicates with the cathode configuration for the ionization of the neutral particles and an ion extraction system communicates with the reaction zone. Ions from the extraction system are sent to a detection system and a mechanism for the evacuation of the mass spectrometer arrangement. The cathode configuration includes a field emission cathode with an emitter surface, wherein at a short distance from this emitter surface, an extraction grid is disposed for the extraction of electrons, which grid substantially covers the emitter surface. The emitter surface encompasses herein at least partially a hollow volume such that a tubular structure is formed.
Abstract translation: 用于发射电子的阴极配置具有连接到用于供应中性粒子的入口的反应区。 开口与阴极结构连通，用于中性粒子的电离，离子提取系统与反应区连通。 来自提取系统的离子被发送到检测系统和用于疏散质谱仪装置的机构。 阴极配置包括具有发射极表面的场致发射阴极，其中在离该发射体表面短的距离处，设置用于提取电子的提取栅格，栅格基本上覆盖发射器表面。 发射器表面在此包括至少部分为中空体积，从而形成管状结构。
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69.发明申请公开(公告)号：US20090294652A1
公开(公告)日：2009-12-03
申请号：US12475185
申请日：2009-05-29
CPC classification number: H01J49/08 , H01J3/025 , H01J49/147
Abstract: Electron generation apparatuses are disclosed that can include a power source coupled to a first electrode, and a switch between the power source and the first electrode. Mass spectrometry instruments are disclosed that can include a power source coupled to a first electrode, and a switch between the power source and the first electrode. Methods of generating electrons are provided that can include generating different voltage differentials across a cell, with at least one of the voltage differentials generating electrons from gaseous material, and discharging at least some of the electrons from the cell. Mass spectrometry methods are also provided that can include providing sample proximate a glow discharge ionization source, and generating a pulse of electrons from the ionization source according to an ionization parameter to ionize at least a portion of the sample.
Abstract translation: 公开了可以包括耦合到第一电极的电源以及电源和第一电极之间的开关的电子发生装置。 公开了可以包括耦合到第一电极的电源以及电源和第一电极之间的开关的质谱仪器。 提供了产生电子的方法，其可以包括跨电池产生不同的电压差，其中至少一个电压差从气体材料产生电子，并且从电池中排出至少一些电子。 还提供了质谱法，其可以包括在辉光放电电离源附近提供样品，以及根据电离参数从电离源产生电子脉冲以电离至少一部分样品。
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公开(公告)号：US07544951B2
公开(公告)日：2009-06-09
申请号：US11495628
申请日：2006-07-31
Applicant: Rodney Kendall , Tomohiko Abe
Inventor： Rodney Kendall , Tomohiko Abe
CPC classification number: H01J37/065 , H01J3/021 , H01J3/027 , H01J37/067 , H01J49/08 , H01J2237/061 , H01J2237/26 , H01J2237/28
Abstract: A device which employs an electron beam, for performing a desired function, includes an electron gun for generating the electron beam. The electron gun includes a barrel shaped rotatable structure having a plurality of annularly disposed electron sources. A curvature of a surface portion of the rotatable structure is shaped to optimize electric field concentrations. The rotatable structure further includes end portion protrusions.
Abstract translation: 使用电子束来执行所需功能的装置包括用于产生电子束的电子枪。 电子枪包括具有多个环形设置的电子源的桶形可旋转结构。 可旋转结构的表面部分的曲率被成形为优化电场浓度。 可旋转结构还包括端部突起。
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