公开(公告)号：US06956217B2

公开(公告)日：2005-10-18

申请号：US10775271

申请日：2004-02-10

申请人： Tihiro Ohkawa

发明人： Tihiro Ohkawa

IPC分类号： G21F9/00 ,  H01J49/28 ,  H01J49/32 ,  H01J49/42

CPC分类号： H01J49/328 ,  B01D59/48 ,  B03C1/023 ,  B03C1/288

摘要： A device for separating particles according to their respective masses includes a substantially cylindrical wall of inner radius, “Rwall”, that surrounds a chamber and defines a longitudinal axis. A multi-species plasma having relatively cold ions is initiated at a first end of the chamber within a relatively small radius, “rsource”, from the longitudinal axis. A hollow cylinder having an outer radius, “Router”, is positioned at the second end of the chamber and centered on the axis. Cross electric and magnetic fields (E×B) are established in the chamber that are configured to send ions of relatively high mass on trajectories having a radial apogee, rapogee, that is greater than the cylinder's outer radius (r>Router). After reaching apogee, these ions lose energy and strike the cylinder where they are collected. Low mass ions are placed on small radius helical trajectories and pass through the hollow cylinder.

公开(公告)号：US06815674B1

公开(公告)日：2004-11-09

申请号：US10453758

申请日：2003-06-03

申请人： Guenter F. Voss

发明人： Guenter F. Voss

IPC分类号： H01J4900

CPC分类号： H01J49/328 ,  B01D59/48

摘要： In one embodiment, a miniaturized structure and associated method function as a mass spectrometer or analyzer and may, with modification, function as an ion generator. The miniaturized structure has a pair of generally planar parallel spaced electrodes which have projecting walls cooperating to define an ion generating chamber and an exit aperture. By controlling the electric field which is oriented perpendicular to an applied magnetic field, the ion beam may be separated into a plurality beams based upon mass to charge ratio with a predetermined mass to charge ratio emerging from the exit of the apparatus and when the apparatus is functioning as a mass spectrometer or analyzer impinges on an ion collector which responsively transmits information to a cooperating processor. Where it is desired to have it function as an ionizer the ion collector disposed adjacent the ion exit is eliminated.

摘要翻译： 在一个实施方案中，小型化结构和相关方法用作质谱仪或分析仪，并且可以作为离子发生器发挥作用。 小型化结构具有一对大致平面的平行隔开的电极，其具有配合以限定离子产生室和出口孔的突出壁。 通过控制垂直于所施加的磁场的电场，离子束可以基于质荷比与从装置的出口引出的预定的质荷比分离成多个光束，并且当该装置是 作为质谱仪或分析仪用作离子收集器，其将信息反应地传送到协作处理器。 在需要使其具有离子发生器功能的情况下，消除了邻近离子出口设置的离子收集器。

公开(公告)号：US06590206B1

公开(公告)日：2003-07-08

申请号：US09518507

申请日：2000-03-03

申请人： Robert Evrard

发明人： Robert Evrard

IPC分类号： B01D5944

CPC分类号： H01J49/328 ,  H01J27/14

摘要： A mass spectrometer is disclosed which includes an ionizer, a collector slit disposed at a predetermined distance from the ionizer, and an electrostatic field source disposed between the ionizer and the collector slit. The electrostatic field source has a selected amplitude which is substantially uniform within a space between the ionizer and the collector slit. The electrostatic field is oriented substantially perpendicular to a line between the ionizer and the collector slit. The mass spectrometer includes a magnetic field source disposed between the ionizer and the collector slit. The magnetic field source induces a substantially uniform magnetic field within the space. The magnetic field has a direction perpendicular to both the electrostatic field and to the line between the ionizer and the collector slit. The spectrometer includes a detector disposed behind the collector slit. The selected electrostatic field amplitude is chosen so that ions having a particular mass number traverse a substantially cycloidal path between the ionizer and the collector slit. The cycloidal path has a linear component which is substantially equal to the selected distance at a position substantially along the line.

摘要翻译： 公开了一种质谱仪，其包括电离器，设置在离电离器的预定距离处的集电器狭缝以及设置在离子发生器和收集器狭缝之间的静电场源。 静电场源具有在离子发生器和收集器狭缝之间的空间内基本均匀的选定幅度。 静电场基本上垂直于电离器和收集器狭缝之间的线定向。 质谱仪包括设置在离子发生器和收集器狭缝之间的磁场源。 磁场源在该空间内产生基本均匀的磁场。 磁场具有垂直于静电场和离子发生器与收集器狭缝之间的线的方向。 光谱仪包括设置在收集器狭缝后面的检测器。 所选择的静电场幅度被选择为使得具有特定质量数的离子穿过离子发生器和收集器狭缝之间的基本摆线路径。 摆线路径具有基本上等于基本上沿线的位置处的选定距离的线性分量。

公开(公告)号：US6096220A

公开(公告)日：2000-08-01

申请号：US192945

申请日：1998-11-16

申请人： Tihiro Ohkawa

发明人： Tihiro Ohkawa

IPC分类号： H01J49/26 ,  B01J19/08 ,  H01J49/30 ,  B03C1/00

CPC分类号： H01J49/328 ,  B03C1/023 ,  B03C1/288

摘要： A plasma mass filter for separating low-mass particles from high-mass particles in a multi-species plasma includes a cylindrical shaped wall which surrounds a hollow chamber. A magnet is mounted on the wall to generate a magnetic field that is aligned substantially parallel to the longitudinal axis of the chamber. Also, an electric field is generated which is substantially perpendicular to the magnetic field and which, together with the magnetic field, creates crossed magnetic and electric fields in the chamber. Importantly, the electric field has a positive potential on the axis relative to the wall which is usually zero potential. When a multi-species plasma is injected into the chamber, the plasma interacts with the crossed magnetic and electric fields to eject high-mass particles into the wall surrounding the chamber. On the other hand, low-mass particles are confined in the chamber during their transit therethrough to separate the low-mass particles from the high-mass particles. The demarcation between high-mass particles and low-mass particles is a cut-off mass M.sub.c which is established by setting the magnitude of the magnetic field strength, B.sub.z, the positive voltage along the longitudinal axis, V.sub.ctr, and the radius of the cylindrical chamber, "a". M.sub.c can then be determined with the expression: M.sub.c =ea.sup.2 (B.sub.z).sup.2 /8V.sub.ctr.

摘要翻译： 用于在多品种等离子体中分离低质量颗粒与高质量颗粒的等离子体质量过滤器包括围绕中空室的圆柱形壁。 磁体安装在壁上以产生基本上平行于腔的纵向轴线排列的磁场。 此外，产生基本上垂直于磁场的电场，并且与电场一起在腔室中产生交叉的磁场和电场。 重要的是，电场相对于通常为零电位的壁的轴线具有正电位。 当将多物质等离子体注入腔室时，等离子体与交叉的磁场和电场相互作用，以将高质量粒子喷射到腔室周围的壁中。 另一方面，低质量颗粒在其通过过程中被限制在室中，以将低质量颗粒与高质量颗粒分离。 高质量粒子和低质量粒子之间的分界是通过设定磁场强度Bz，沿着纵向轴线的正电压Vctr和圆柱体的半径来建立的截止质量Mc 室，“a”。 Mc可以用下式表示：Mc = ea2（Bz）2 / 8Vctr。

公开(公告)号：US5304799A

公开(公告)日：1994-04-19

申请号：US20089

申请日：1993-02-19

申请人： Lutz Kurzweg

发明人： Lutz Kurzweg

IPC分类号： H01J49/04 ,  H01J49/10 ,  H01J49/26 ,  H01J49/28 ,  H01J49/00

CPC分类号： H01J49/0013 ,  H01J49/328

摘要： A cycloidal mass spectrometer having a housing which defines an ion trajectory volume, an electric field generator for establishing an electric field within the ion trajectory volume, and an ionizer for receiving gaseous specimens to be analyzed and converting the same into ions which travel through orthogonal electric and magnetic fields and impinge upon a collector. The spectrometer is designed to have a plurality of ions of different mass to charge ratios impinging on the collector generally simultaneously. A processor determines the mass distribution of the ions impinging upon the collector. A plurality of electric field plates are electrically insulated from each other and may be sealed so as to define the ion trajectory volume. In another embodiment, an assembly of electric field plates are disposed within a vacuum enclosure. A miniature ionizer preferably has a miniature filament. The cycloidal mass spectrometer and ionizer may be miniaturized so as to provide for a small, readily portable instrument.

摘要翻译： 具有限定离子轨迹体积的壳体的摆线质谱仪，用于在离子轨迹体积内建立电场的电场发生器，以及用于接收待分析的气体样品的离子发生器，并将其转换成通过正交电流行进的离子 和磁场并撞击在收集器上。 光谱仪设计成具有不同质量与充电比例的多个离子通常同时撞击在收集器上。 处理器确定撞击在收集器上的离子的质量分布。 多个电场板彼此电绝缘并且可以被密封以限定离子轨迹体积。 在另一个实施例中，电场板的组件设置在真空外壳内。 微型离子发生器优选具有微型丝。 摆线式质谱仪和离子发生器可以小型化，以便提供一种小型易于携带的仪器。

公开(公告)号：US3670162A

公开(公告)日：1972-06-13

申请号：US3670162D

申请日：1970-09-23

申请人： AVCO CORP

发明人： ELMORE ROBERT E

IPC分类号： H01J49/32 ,  H01J39/34

CPC分类号： H01J49/328

摘要： A charged particle analyzer for analyzing charged particles with respect to their specific mass is disclosed. The charged particle analyzer employs the principle of crossed electric and magnetic fields to obtain perfect double focusing and high resolution. The electric field is radial in direction and proportional in magnitude to the radius of the analyzer at any point in the flight cylinder and is normal to the magnetic field. A suitable source of ions is provided to permit introduction of ions into the analyzer and a suitable ion receiver is provided to receive ions from the analyzer.

摘要翻译： 公开了一种用于分析带电粒子相对于其特定质量的带电粒子分析仪。 带电粒子分析仪采用交叉电场和磁场的原理，获得完美的双重聚焦和高分辨率。 电场在方向上是径向的，并且在大小上与分析器在飞行缸中的任何点处的半径成比例，并且与磁场垂直。 提供合适的离子源以允许将离子引入分析器中，并且提供合适的离子接收器以从分析器接收离子。

公开(公告)号：US3427449A

公开(公告)日：1969-02-11

申请号：US3427449D

申请日：1966-06-29

申请人： PHILIPS CORP

发明人： ANDREW DEREK

IPC分类号： H01J49/32 ,  H01J39/34 ,  B01D59/44

CPC分类号： H01J49/328

公开(公告)号：US2977470A

公开(公告)日：1961-03-28

申请号：US50128955

申请日：1955-04-14

申请人： CONS ELECTRODYNAMICS CORP

发明人： ROBINSON CHARLES F

IPC分类号： H01J49/32

CPC分类号： H01J49/328

公开(公告)号：US2780729A

公开(公告)日：1957-02-05

申请号：US43176354

申请日：1954-05-24

申请人： CONS ELECTRODYNAMICS CORP

发明人： ROBINSON CHARLES F ,  LANGMUIR ROBERT V ,  BRUBAKER WILSON M ,  PERKINS GEORGE D

IPC分类号： H01J49/32

CPC分类号： H01J49/328

公开(公告)号：US20040178151A1

公开(公告)日：2004-09-16

申请号：US10385073

申请日：2003-03-10

发明人： Richard L. Freeman ,  Robert L. Miller ,  John Gilleland ,  Tihiro Ohkawa

IPC分类号： C02F001/48

CPC分类号： H01J49/328

摘要： A material separator includes a chamber and electrode(s) to create a radially oriented electric field in the chamber. Coils are provided to generate a magnetic field in the chamber. The separator further includes a launcher to propagate a high-frequency electromagnetic wave into the chamber to convert the material into a multi-species plasma. With the crossed electric and magnetic fields, low mass ions in the multi-species plasma are placed on small orbit trajectories and exit through the end of the chamber while high mass ions are placed on large orbit trajectories for capture at the wall of the chamber.

摘要翻译： 材料分离器包括腔室和电极，以在腔室中产生径向取向的电场。 提供线圈以在腔室中产生磁场。 分离器还包括发射器，用于将高频电磁波传播到腔室中以将材料转换成多种类的等离子体。 在交叉的电场和磁场中，多种类等离子体中的低质量离子被放置在小轨道轨迹上，并通过腔室的端部离开，同时将高质量离子放置在大轨道轨迹上以在腔室的壁处捕获。