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    RESOLUTION AND MASS RANGE PERFORMANCE IN DISTANCE-OF-FLIGHT MASS SPECTROMETRY WITH A MULTICHANNEL FOCAL-PLANE CAMERA DETECTOR
    4.
    发明申请
    RESOLUTION AND MASS RANGE PERFORMANCE IN DISTANCE-OF-FLIGHT MASS SPECTROMETRY WITH A MULTICHANNEL FOCAL-PLANE CAMERA DETECTOR 审中-公开
    使用多通道光学平面相机检测器的距离飞行质谱分辨率和质谱范围性能

    公开(公告)号：US20140138538A1

    公开(公告)日：2014-05-22

    申请号：US14110998

    申请日：2012-04-16

    申请人： Gary M. Hieftje ,  Christie George Enke ,  Alexander W. Graham ,  Steven J. Ray ,  Elise Dennis ,  Charles J. Barinaga ,  David W. Koppenaal

    发明人： Gary M. Hieftje ,  Christie George Enke ,  Alexander W. Graham ,  Steven J. Ray ,  Elise Dennis ,  Charles J. Barinaga ,  David W. Koppenaal

    IPC分类号： H01J49/34

    CPC分类号： H01J49/34 ,  H01J49/40

    摘要： A distance-of-flight mass spectrometer (DOFMS) includes an ion source, a field-free region, an extraction region in which ions are accelerated, and a spatially-selective detector for spatially selectively detecting ions extracted by the extraction region. A method for operating a distance-of-flight mass spectrometer DOFMS comprises controlling a detection time in such a way as to permit ions with progressively greater mass-to-charge (m/z) ratios to enter the extraction region of the DOFMS at positions which will permit the ions with progressively greater m/z ratios to enter the detector of the DOFMS, generating a component mass spectrum at each selected value of detection time, and then assembling a composite mass spectrum by shifting the distance-of-flight axis of each component mass spectrum by a distance corresponding to the change in detection time.

    摘要翻译： 飞行时间质谱仪（DOFMS）包括离子源，无场区域，其中离子被加速的提取区域和用于空间选择性地检测由提取区域提取的离子的空间选择性检测器。 用于操作飞行时间质谱仪DOFMS的方法包括以这样的方式控制检测时间，使得允许具有逐渐更大的质荷比（m / z）比的离子在位置处进入DOFMS的提取区域 这将允许具有逐渐更大的m / z比的离子进入DOFMS的检测器，在检测时间的每个选定值处产生组分质谱，然后通过将飞行时间轴的位移 每个组分质谱与检测时间的变化相对应。

    Apparatus for reduction of selected ion intensities in confined ion beams
    8.
    发明授权
    Apparatus for reduction of selected ion intensities in confined ion beams 失效
    用于减少限制离子束中选择的离子强度的装置

    公开(公告)号：US06259091B1

    公开(公告)日：2001-07-10

    申请号：US09097995

    申请日：1998-06-15

    申请人： Gregory C. Eiden ,  Charles J. Barinaga ,  David W. Koppenaal

    发明人： Gregory C. Eiden ,  Charles J. Barinaga ,  David W. Koppenaal

    IPC分类号： H01J4900

    CPC分类号： H01J49/0077 ,  H01J49/145

    摘要： An apparatus for producing an ion beam having an increased proportion of analyte ions compared to carrier gas ions is disclosed. Specifically, the apparatus has an ion trap or a collision cell containing a reagent gas wherein the reagent gas accepts charge from the analyte ions thereby selectively neutralizing the carrier gas ions. Also disclosed is the collision cell as employed in various locations within analytical instruments including an inductively coupled plasma mass spectrometer.

    摘要翻译： 公开了一种用于生产与载气离子相比具有增加的分析物离子比例的离子束的装置。 具体地，该装置具有离子阱或含有反应气体的碰撞池，其中反应气接受来自分析物离子的电荷，从而选择性地中和载气离子。 还公开了在包括电感耦合等离子体质谱仪的分析仪器内的各种位置中使用的碰撞池。

    Method for reduction of selected ion intensities in confined ion beams
    10.
    发明授权
    Method for reduction of selected ion intensities in confined ion beams 失效
    限制离子束中选择离子强度降低的方法

    公开(公告)号：US5767512A

    公开(公告)日：1998-06-16

    申请号：US583324

    申请日：1996-01-05

    申请人： Gregory C. Eiden ,  Charles J. Barinaga ,  David W. Koppenaal

    发明人： Gregory C. Eiden ,  Charles J. Barinaga ,  David W. Koppenaal

    IPC分类号： G01N27/62 ,  H01J27/02 ,  H01J49/06 ,  H01J49/10 ,  H01J49/14 ,  H01J49/26 ,  H01J49/42 ,  B01D59/44 ,  H01J37/08 ,  H01J49/00

    CPC分类号： H01J49/145

    摘要： A method for producing an ion beam having an increased proportion of analyte ions compared to carrier gas ions is disclosed. Specifically, the method has the step of addition of a charge transfer gas to the carrier analyte combination that accepts charge from the carrier gas ions yet minimally accepts charge from the analyte ions thereby selectively neutralizing the carrier gas ions. Also disclosed is the method as employed in various analytical instruments including an inductively coupled plasma mass spectrometer.

    摘要翻译： 公开了一种与载气离子相比具有增加的分析物离子比例的离子束的制造方法。 具体地，该方法具有向载体分析物组合物添加电荷转移气体的步骤，该载体分析物组合从载气离子接受电荷，但最低限度地从分析离子接收电荷，从而选择性地中和载气离子。 还公开了包括电感耦合等离子体质谱仪在内的各种分析仪器中使用的方法。