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    Storage reduction method and apparatus for mass spectroscopy analysis
    22.
    发明授权
    Storage reduction method and apparatus for mass spectroscopy analysis 失效
    用于质谱分析的储存还原方法和装置

    公开(公告)号：US06723982B1

    公开(公告)日：2004-04-20

    申请号：US10618189

    申请日：2003-07-10

    Applicant: J. Barry Shackleford ,  Motoo Tanaka

    Inventor： J. Barry Shackleford ,  Motoo Tanaka

    IPC: H01J4926

    CPC classification number: H01J49/0036

    Abstract: A method and apparatus reduces storage requirements for identifying a sequence of elements in a compound. The storage reduction receives a set of monoisotopic masses designed to address entries from two or more mass spectroscopy data sets according to a fitness function, analyzes the fitness function configured to facilitate identification of a sequence of elements in the compound, determines a minimum address range for addressing entries in each of the two or more mass spectroscopy data sets according to sequence of elements and fitness function analysis and reduces the size of at least one of the two or more mass spectroscopy data sets to selected mass data values according to the minimum address range.

    Abstract translation: 方法和装置减少了用于识别化合物中元素序列的储存要求。 存储减少接收一组单同位素质量，其设计用于根据适应度函数来从两个或更多个质谱数据集中获取条目，分析配置为便于识别化合物中元素序列的适应度函数，确定化合物中的元素序列的最小地址范围 根据元件的顺序和适应度函数分析来寻址两个或更多个质谱数据集中的每个中的条目，并且根据最小地址范围将两个或更多质谱数据集中的至少一个的尺寸减小到所选择的质量数据值 。

    Tandem FAIMS/ion-trapping apparatus and method
    23.
    发明授权
    Tandem FAIMS/ion-trapping apparatus and method 有权
    串联FAIMS /离子捕获装置和方法

    公开(公告)号：US06703609B2

    公开(公告)日：2004-03-09

    申请号：US10221624

    申请日：2002-09-13

    Applicant: Roger Guevremont ,  Randy Purves ,  David Barnett

    Inventor： Roger Guevremont ,  Randy Purves ,  David Barnett

    IPC: H01J4926

    CPC classification number: H01J49/004 ,  G01N27/624

    Abstract: A method for selectively transmitting ions using a FAIMS device is disclosed. A first analyzer region is defined by a space between first and second spaced apart electrodes. A second analyser region is provided in operational communication with the first analyzer region. Ions are provided to the first analyzer region. The ions are coupled from the first analyser region to the second analyzer region. An asymmetric waveform is used to generate an electric field within the first analyser region and a compensation voltage is applied to prevent some ions from exiting the analyser region. Conditions are provided within the second analyzer region for effecting a second different separation of ions therein. Finally, the separated ions are trapped to accumulate ions within a trapping region thereof.

    Abstract translation: 公开了一种使用FAIMS装置选择性地传输离子的方法。 第一分析器区域由第一和第二间隔开的电极之间的空间限定。 提供与第一分析器区域操作通信的第二分析器区域。 离子被提供给第一分析器区域。 离子从第一分析器区域耦合到第二分析器区域。 使用非对称波形来产生第一分析器区域内的电场，并且施加补偿电压以防止一些离子离开分析器区域。 在第二分析仪区域内提供条件以实现其中的离子的第二不同分离。 最后，分离的离子被捕获以在其捕获区域内积聚离子。

    Multi-anode detector with increased dynamic range for time-of-flight mass spectrometers with counting data acquisition
    24.
    发明授权
    Multi-anode detector with increased dynamic range for time-of-flight mass spectrometers with counting data acquisition 有权
    多阳极检测器具有增加的飞行时间质谱仪的动态范围，具有计数数据采集功能

    公开(公告)号：US06646252B1

    公开(公告)日：2003-11-11

    申请号：US09720182

    申请日：2001-02-22

    Applicant: Marc Gonin

    Inventor： Marc Gonin

    IPC: H01J4926

    CPC classification number: H01J49/40 ,  H01J49/025

    Abstract: A new detection scheme for time-of-flight mass spectrometers is disclosed. This detection scheme allows extending the dynamic range of spectrometers operating with a counting, technique (TDC). The extended dynamic range is achieved by constructing a multiple anode detector wherein the individual anodes detect different fractions of the incoming particles. Different anode fractions are achieved by varying the size, physical location, and electrical/magnetic fields of the various anodes. An anode with a small anode fraction avoids saturation and allows an ion detector to render an accurate count of ions even for abundant species.

    Abstract translation: 公开了一种新的飞行时间质谱仪检测方案。 该检测方案允许通过计数技术（TDC）扩展光谱仪的动态范围。 通过构建多阳极检测器来实现扩展的动态范围，其中各个阳极检测进入的颗粒的不同部分。 通过改变各种阳极的尺寸，物理位置和电/磁场来实现不同的阳极分数。 具有小阳极部分的阳极避免饱和，并且允许离子检测器即使对于丰富的物质也能提供精确的离子计数。

    Ionization method for mass spectrometry and mass spectrometry apparatus
    26.
    发明授权
    Ionization method for mass spectrometry and mass spectrometry apparatus 失效

    公开(公告)号：US06590205B2

    公开(公告)日：2003-07-08

    申请号：US09923439

    申请日：2001-08-08

    Applicant: Yoshiro Shiokawa ,  Megumi Nakamura ,  Tohru Sasaki ,  Toshihiro Fujii

    Inventor： Yoshiro Shiokawa ,  Megumi Nakamura ,  Tohru Sasaki ,  Toshihiro Fujii

    IPC: H01J4926

    CPC classification number: H01J49/04

    Abstract: Metal ions are attached to a sample gas in an ionization chamber to produce ions of the sample gas. The ions of the sample gas pass through a mass spectrometer formed by an electromagnetic field for separation by mass. The mass separated ions of the sample gas are detected and measured by a detector as an ion current. Further, a metal ion emitter for emitting metal ions is arranged at the upstream side of a region controlled to a reduced pressure atmosphere where the flow of gas becomes viscous, a sample gas inflow part for introducing the sample gas to the downstream side where the metal ions are transported, and the sample gas ionized by attachment of the metal ions passes through the opening of the aperture plate and transported to the mass spectrometer. A second gas inflow part is arranged at the upstream side of the metal ion producing region. A second gas supplied by the second inflow part flows through the metal ion producing region and sample gas ionization region. Due to this configuration, it is possible to suppress contact of the sample gas with the metal ion emitter, prevent contamination of the metal ion emitter, and perform mass spectrometry stably over a long term.

    Variable width digital filter for time-of-flight mass spectrometry
    27.
    发明授权
    Variable width digital filter for time-of-flight mass spectrometry 有权
    可变宽度数字滤波器，用于飞行时间质谱

    公开(公告)号：US06586728B1

    公开(公告)日：2003-07-01

    申请号：US09569158

    申请日：2000-05-11

    Applicant: Edward J. Gavin ,  Leonid Braginsky

    Inventor： Edward J. Gavin ,  Leonid Braginsky

    IPC: H01J4926

    CPC classification number: H01J49/40

    Abstract: A method and system of detecting mass to charge ratio of ions. The method includes producing charged ions in a vacuum, accelerating the charged ions in an electric field into a free flight tube and detecting the charged ions at a detector associated with the free flight tube. A control system selects a bandwidth for filtering a signal produced by the detector and the signal produced by the detector is then filtered with a variable width digital filter based upon the selected bandwidth. The bandwidth for filtering the signal may be selected from a look-up table within the control system based upon the mass to charge ratio of an ion of interest. Alternatively, a peak bandwidth within the signal produced by the detector may be determined and the signal produced by the detector may then be filtered with the variable width digital filter based upon the determined peak bandwidth.

    Abstract translation: 一种检测离子质荷比的方法和系统。 该方法包括在真空中产生带电离子，将电场中的带电离子加速到自由飞行管中，并在与自由飞行管相关联的检测器处检测带电离子。 控制系统选择用于对由检测器产生的信号进行滤波的带宽，然后基于所选择的带宽，用可变宽度数字滤波器对由检测器产生的信号进行滤波。 用于过滤信号的带宽可以根据感兴趣的离子的质量与电荷比从控制系统内的查找表中选择。 或者，可以确定由检测器产生的信号内的峰值带宽，然后基于所确定的峰值带宽，用可变宽度数字滤波器对由检测器产生的信号进行滤波。

    Tandem mass spectrometer comprising only two quadrupole filters
    28.
    发明授权
    Tandem mass spectrometer comprising only two quadrupole filters 有权
    串联质谱仪只包含两个四极滤波器

    公开(公告)号：US06559444B2

    公开(公告)日：2003-05-06

    申请号：US09801204

    申请日：2001-03-07

    Applicant: Jochen Franzen

    Inventor： Jochen Franzen

    IPC: H01J4926

    CPC classification number: H01J49/062 ,  H01J49/004 ,  H01J49/421

    Abstract: The invention relates to a tandem mass spectrometer and a method for scanning daughter ion spectra which uses a quadrupole mass spectrometer for selection of parent ions and another one for the measurement of the daughter ions. The invention consists of not using a conventional third quadrupole filter as a collision cell for fragmentation of the parent ions but an ion guide system with helically coiled wires, especially in the form of a double helix, in which the ions can be completely decelerated and can be actively fed to the outlet aperture.

    Abstract translation: 本发明涉及串联质谱仪和用于扫描子离子光谱的方法，其使用四极质谱仪来选择母离子，另一种用于测量子离子。本发明包括不使用常规的第四四极滤波器 用于分离母体离子的碰撞电池，但是具有螺旋线圈导线的离子导向系统，特别是双螺旋形式，其中离子可以被完全减速并且可以被主动地馈送到出口孔。

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