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公开(公告)号：US06501078B1
公开(公告)日：2002-12-31
申请号：US09527031
申请日：2000-03-16
Applicant: Geoffrey Ryding , Theodore H. Smick , Marvin Farley , Takao Sakase
Inventor： Geoffrey Ryding , Theodore H. Smick , Marvin Farley , Takao Sakase
IPC: H01J3715
CPC classification number: H01J37/15 , H01J37/08 , H01J49/28 , H01J2237/31701
Abstract: An ion electrode extraction assembly comprising an ion source 20 and at least one electrode 50 having a gap through which a beam of extracted ions passes in use. An electrode manipulator assembly 55 is provided to move the electrode so as to vary the width of the gap transversely to the ion beam, move the electrode transversely to the ion beam, and move the electrode in the direction of the ion beam. The three degrees of movement being carried out independently of one another.
Abstract translation: 一种离子电极提取组件，其包括离子源20和至少一个具有间隙的电极50，所提取的离子束在使用中通过该间隙通过。 提供电极操纵器组件55以移动电极，以便横向于离子束改变间隙的宽度，将电极横向于离子束移动，并且沿着离子束的方向移动电极。 三个运动方式彼此独立地进行。
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公开(公告)号：US06294781B1
公开(公告)日：2001-09-25
申请号：US09298543
申请日：1999-04-23
Applicant: Tihiro Ohkawa
Inventor： Tihiro Ohkawa
IPC: H01J4928
CPC classification number: H01J49/28
Abstract: A device for segregating high-mass particles in a multi-species plasma from lower-mass particles has a chamber surrounded by a hollow annular shaped enclosure which defines a central axis. In a radial direction outwardly from the axis, the chamber includes a light mass collection section that is in fluid communication, through an intermediate section, with a filter section. A magnetic field, Bz, is oriented parallel to the central axis in the filter section, and the filter section has an outer wall which is at a distance slightly greater than a distance “a” from the central axis. An electric field is crossed with the magnetic field and is perpendicular to the central axis in the filter section. Further, there is zero potential on the outer wall of the filter section while there is a positive potential “V” on the inner wall of the filter section. At least if one plasma source injects a multi-species plasma into the filter section for interaction with the crossed magnetic and electric fields to eject high-mass particles into contact with the outer wall, while low-mass particles are prevented from doing so. High-mass particles are differentiated from low-mass particles by a predetermined value Mc, where Mc=ea2(Bz)2/8V.
Abstract translation: 用于分离来自较低质量颗粒的多种类等离子体中的高质量颗粒的装置具有由限定中心轴线的中空环形外壳围绕的室。 在从轴线向外的径向方向上，腔室包括通过中间部分与过滤器部分流体连通的光质收集部分。 磁场Bz在过滤器部分中平行于中心轴线定向，并且过滤器部分具有一个远离距离中心轴距离“a”更远的外壁。 电场与磁场交叉并垂直于过滤器部分的中心轴线。 此外，在过滤器部分的内壁上存在正电位“V”的情况下，在过滤器部分的外壁上存在零电位。 至少如果一个等离子体源将多种类的等离子体注入到过滤器部分中以与交叉磁场和电场相互作用，以将高质量粒子喷射到与外壁接触的同时，防止低质量粒子这样做。 高质量颗粒与低质量颗粒分开预定值Mc，其中Mc = ea2（Bz）2 / 8V。
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公开(公告)号：US5049739A
公开(公告)日：1991-09-17
申请号：US443499
申请日：1989-12-01
Applicant: Yukio Okamoto
Inventor： Yukio Okamoto
CPC classification number: H01J49/025 , H01J49/04 , H01J49/105 , H01J49/28
Abstract: A plasma ion source mass spectrometer for trace elements is provided with a plasma generating section, an ion beam generating section, an ion beam focusing section, an ion mass analyzer section and an ion detector section, is further provided with a resonance charge exchange reaction section and an ion energy analyzer section, both sections being disposed between the ion beam focusing section and the ion mass analyzer section and being constructed such that fast disturbing ions contained in the incident ion beam are transformed in the resonance charge exchange reaction section into fast neutral atoms (or molecules) and slow disturbing ion, and such that the fast neutral atoms (or molecules) and the slow disturbing ions described aboved are separated to be removed from the ions to be analyzed.
Abstract translation: 用于微量元素的等离子体离子源质谱仪设置有等离子体产生部，离子束产生部，离子束聚焦部，离子质量分析部和离子检测部，还具有共振电荷交换反应部 和离子能量分析器部分，两个部分设置在离子束聚焦部分和离子质量分析器部分之间，并且被构造成使得包含在入射离子束中的快速干扰离子在共振电荷交换反应部分中变成快中性原子 （或分子）和缓慢的干扰离子，并且使得上述快速中性原子（或分子）和缓慢干扰的离子被分离以从待分析的离子中除去。
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公开(公告)号：US3866042A
公开(公告)日：1975-02-11
申请号：US37992573
申请日：1973-07-17
Applicant: CAMECA
Inventor： VASTEL JEAN
CPC classification number: H01J49/28 , H01J49/286 , H01J49/324
Abstract: A microanalyser operating by secondary ion emission and comprising a double magnetic-prism for deflecting the ions according to their ''''momentum-to-charge'''' ratio and electrostatic means for filtering the ions according to their ''''energy-tocharge'''' ratio. An element is provided to operate either as an electrostatic mirror allowing the production of images through ion microscopy or as a transmitting and filtering device incorporated in the make-up of a double-focussing mass spectrometer in accordance with the magnetic prism and an electrostatic condenser.
Abstract translation: 通过二次离子发射操作的微型分析仪，包括用于根据“动量与电荷”比率偏转离子的双重磁性棱镜，以及根据其“能量 - 电荷”比对过滤离子的静电装置。 提供元件以作为静电镜来操作，其允许通过离子显微镜产生图像，或作为根据磁性棱镜和静电冷凝器结合在双重聚焦质谱仪的组合中的透射和滤波装置。
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公开(公告)号：US3192384A
公开(公告)日：1965-06-29
申请号：US22284062
申请日：1962-09-11
Applicant: ASS ELECT IND
Inventor： EDWARD WILLDIG
IPC: H01J49/28
CPC classification number: H01J49/28
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Patent Agency Ranking
公开(公告)号：US20240014022A1
公开(公告)日：2024-01-11
申请号：US18255837
申请日：2021-12-03
Applicant: ISOTOPX LTD
Inventor： Damian Paul TOOTELL , Anthony Michael JONES
CPC classification number: H01J49/022 , H01J49/0422 , H01J49/28 , H01J49/08
Abstract: An ion source (30) for a static gas mass spectrometer is described. The ion source (30) comprises: a source block (310) defining a volume V to receive a sample gas G; an electron source (320) in fluid communication with the source block (310) and configured to provide a flux of electrons E therein for ionising the sample gas G; a set of electrodes (330), including a first electrode (330A), disposed between the electron source (320) and the source block (310); and a controller (not shown) configured to control a voltage applied to the first electrode (330A) to attenuate the flux of the electrons E into the source block (310) during a first time period following receiving of the sample gas G in the source block (310) and to permit the flux of the electrons E into the source block (310) during a second time period following the first time period.
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公开(公告)号：US20190057853A1
公开(公告)日：2019-02-21
申请号：US16076385
申请日：2017-02-07
Inventor： Roch Andrzejewski , Rachid Barrahma , David Dowsett , Tom Wirtz
Abstract: An electromagnet assembly suitable for mass spectrometer comprising one yoke; and two pole pieces; the pole pieces being comprised in a vacuum chamber and being separated from each other by a pole piece gap defining a passage for the charged particles to be deflected; the yoke forming a bridge over the two pole pieces thus defining a magnetic circuit. The electromagnet assembly further comprises one electrical circuit for generating a magnetic flux in the magnetic circuit, the electrical circuit being included in the yoke. The electromagnet assembly is remarkable in that the pole pieces are electrically insulated from the electrical circuit and from the yoke by first electrical insulating means and are electrically insulated from the vacuum chamber.
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公开(公告)号：US20140042314A1
公开(公告)日：2014-02-13
申请号：US14056622
申请日：2013-10-17
Applicant: Micromass UK Limited
Inventor： Jeffery Mark Brown , Martin Raymond Green
IPC: H01J49/28
CPC classification number: H01J49/28 , H01J49/0072 , H01J49/065
Abstract: A mass spectrometer is disclosed comprising an Electron Transfer Dissociation device comprising an ion guide. A control system determines the degree of fragmentation and charge reduction of precursor ions within the ion guide and varies the speed at which ions are transmitted through the ion guide in order to optimise the fragmentation and charge reduction process.
Abstract translation: 公开了一种质谱仪，其包括电子转移离解装置，其包括离子导向器。 控制系统确定离子导向器内的前体离子的碎裂和电荷减少的程度，并且改变离子通过离子导向器传输的速度，以便优化碎裂和电荷还原过程。
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公开(公告)号：US08581184B2
公开(公告)日：2013-11-12
申请号：US13639474
申请日：2011-03-03
Applicant: Shiro Mizutani
Inventor： Shiro Mizutani
IPC: H01J49/42
CPC classification number: H01J49/28 , H01J49/022 , H01J49/4215
Abstract: Provided is a quadrupole mass spectrometer including direct-current voltage sources having response characteristics which ensure that the response time of the direct-current voltage will be shorter than the period of time required for an ion having the highest mass-to-charge ratio (m/z) among the ions introduced into a quadrupole mass filter to pass through this filter. Main rod electrodes and pre-rod electrodes are connected to each other via primary differentiation circuits. Thus, in the transient state of the voltage change due to the switching of the mass-to-charge ratio, among the ions entering the quadrupole mass filter, ions having low m/z values can be removed by a pre-electrode unit, and ions having high m/z values can be removed by a main electrode unit. Accordingly, a large amount of ions can be prevented from passing through the filter and entering an ion detector.
Abstract translation: 提供了一种四极质谱仪，其包括具有响应特性的直流电压源，其确保直流电压的响应时间将短于具有最高质荷比的离子所需的时间（m / z）引入四极质量过滤器中的离子通过该过滤器。 主杆电极和预棒电极通过一次微分电路相互连接。 因此，在由质荷比的切换引起的电压变化的瞬态中，在进入四极质量过滤器的离子中，通过预电极单元可以除去具有低m / z值的离子， 可以通过主电极单元去除具有高m / z值的离子。 因此，可以防止大量的离子通过过滤器并进入离子检测器。
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公开(公告)号：US20130234018A1
公开(公告)日：2013-09-12
申请号：US13639474
申请日：2011-03-03
Applicant: SHIMADZU CORPORATION
Inventor： Shiro Mizutani
IPC: H01J49/28
CPC classification number: H01J49/28 , H01J49/022 , H01J49/4215
Abstract: Provided is a quadrupole mass spectrometer including direct-current voltage sources having response characteristics which ensure that the response time of the direct-current voltage will be shorter than the period of time required for an ion having the highest mass-to-charge ratio (m/z) among the ions introduced into a quadrupole mass filter to pass through this filter. Main rod electrodes and pre-rod electrodes are connected to each other via primary differentiation circuits. Thus, in the transient state of the voltage change due to the switching of the mass-to-charge ratio, among the ions entering the quadrupole mass filter, ions having low m/z values can be removed by a pre-electrode unit, and ions having high m/z values can be removed by a main electrode unit. Accordingly, a large amount of ions can be prevented from passing through the filter and entering an ion detector.
Abstract translation: 提供了一种四极质谱仪，其包括具有响应特性的直流电压源，其确保直流电压的响应时间将短于具有最高质荷比的离子所需的时间（m / z）引入四极质量过滤器中的离子通过该过滤器。 主杆电极和预棒电极通过一次微分电路相互连接。 因此，在由质荷比的切换引起的电压变化的瞬态中，在进入四极质量过滤器的离子中，通过预电极单元可以除去具有低m / z值的离子， 可以通过主电极单元去除具有高m / z值的离子。 因此，可以防止大量的离子通过过滤器并进入离子检测器。
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