Ion detection
    43.
    发明授权
    Ion detection 有权
    离子检测

    公开(公告)号:US09520280B2

    公开(公告)日:2016-12-13

    申请号:US13993316

    申请日:2011-12-14

    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。

    Targeted analysis for tandem mass spectrometry
    44.
    发明授权
    Targeted analysis for tandem mass spectrometry 有权
    串联质谱的目标分析

    公开(公告)号:US09287101B2

    公开(公告)日:2016-03-15

    申请号:US14813513

    申请日:2015-07-30

    Abstract: A tandem mass spectrometer and method are described. Precursor ions are generated in an ion source and an ion injector injects ions towards a downstream ion guide via a single or multi reflection TOF device that separates ions into packets in accordance with their m/z. A single pass ion page in the path of the precursor ions between the ion injector and the ion guide is controlled so that only a subset of precursor ion packets, containing precursor ions of interest, is allowed onward transmission to the ion guide. A high resolution mass spectrometer is provided for analysis of those ions, or their fragments, which have been allowed passage through the ion gate. The technique permits multiple m/z ranges to be selected from a wise mass range of precursors, with optional fragmentation of one or more of the chosen ion species.

    Abstract translation: 描述了串联质谱仪和方法。 在离子源中产生前体离子,并且离子注入器通过单个或多反射TOF装置将离子注入下游离子导向器,根据它们的m / z将离子分离成分组。 控制在离子注入器和离子导向器之间的前体离子的路径中的单程离子页面,使得仅允许含有感兴趣的前体离子的前体离子包的子集向前传输到离子引导件。 提供了一种高分辨率质谱仪用于分析已经允许通过离子门的那些离子或其碎片。 该技术允许从明显质量范围的前体中选择多个m / z范围,任选地分离一种或多种选择的离子物质。

    Spectral deconvolution in ion cyclotron resonance mass spectrometry
    46.
    发明授权
    Spectral deconvolution in ion cyclotron resonance mass spectrometry 有权
    离子回旋共振质谱中的光谱去卷积

    公开(公告)号:US08825413B2

    公开(公告)日:2014-09-02

    申请号:US12755977

    申请日:2010-04-07

    CPC classification number: H01J49/0036 H01J49/38

    Abstract: A method and system for deconvolution of a frequency spectrum obtained in an ICR mass spectrometer based on a detection of ion oscillation overtones of the M-th order (where the integer M>1). A plurality of frequency peaks is collected within the frequency spectrum corresponding respectively to oscillations of different groups of ions, and associates at least one of the frequency peaks having a frequency f and a measured amplitude A with a particular group of the ions. The method and system identify whether the frequency peak is related to one of an overtone frequency, a subharmonic frequency, a higher harmonic frequency, or a side-shifted frequency of the oscillations of the different group of ions. The method and system derive calculated amplitudes of the overtone frequency peaks associated with the groups of ions by incorporating measured amplitudes of the frequency peaks related to the subharmonic frequency, the higher harmonic frequency, or the side-shifted frequency associated with the groups of ions into the calculated amplitudes of the overtone frequency peaks. The method and system generate a deconvoluted frequency spectrum including the overtone frequency peaks associated with the different groups of ions.

    Abstract translation: 基于对M阶离子振荡泛音(其中整数M> 1)的检测,在ICR质谱仪中获得的频谱的去卷积方法和系统。 在分别对应于不同离子组的振荡的频谱内收集多个频率峰值,并且将具有频率f和测量幅度A的频率峰值中的至少一个与特定的一组离子相关联。 该方法和系统识别频率峰值是否与不同离子组的振荡的泛音频率,次谐波频率,高次谐波频率或侧移频率之一相关。 该方法和系统通过将与次谐波频率,高次谐波频率或与离子组相关联的侧移频率相关的频率峰值的测量幅度并入到离子组相关的泛音频率峰值中来计算振幅 计算的泛音频率峰值的幅度。 该方法和系统产生包括与不同离子组相关的泛音频率峰值的解卷积频谱。

    Apparatus and method for controlling a pipeline-type ion cyclotron resonance mass spectrometer
    47.
    发明授权
    Apparatus and method for controlling a pipeline-type ion cyclotron resonance mass spectrometer 有权
    用于控制管道型离子回旋共振质谱仪的装置和方法

    公开(公告)号:US08796618B2

    公开(公告)日:2014-08-05

    申请号:US13511157

    申请日:2010-11-16

    CPC classification number: H01J49/38 H01J49/022

    Abstract: The present invention relates to an apparatus and method for controlling a pipeline-type ion cyclotron resonance mass spectrometer, in which an ion trap unit of the ion cyclotron resonance mass spectrometer is capable of using two digitizers at the same time, thus enabling a measurement process for detecting an electrical signal which indicates the mass of ions corresponding to a specific purpose, and another measurement process for detecting another electrical signal which indicates the mass of ions corresponding to another specific purpose, to be simultaneously performed. Accordingly, it is an aim of the present invention to provide an apparatus and method for controlling a pipeline-type ion cyclotron resonance mass spectrometer, which can overcome the problems of time delay among control procedures, and can present a signal detection step wherein an excitation electrode is utilized to improve the sensitivity and speed of signal detection.

    Abstract translation: 本发明涉及一种用于控制管道型离子回旋共振质谱仪的装置和方法,其中离子回旋共振质谱仪的离子阱单元能够同时使用两个数字化仪,因此能够进行测量过程 用于检测指示对应于特定目的的离子质量的电信号,以及用于检测指示与另一特定目的相对应的离子质量的另一电信号的另一测量处理。 因此,本发明的目的是提供一种用于控制管道型离子回旋共振质谱仪的装置和方法,其可以克服控制过程之间的时间延迟的问题,并且可以呈现信号检测步骤,其中激发 电极用于提高信号检测的灵敏度和速度。

    Correction of asymmetric electric fields in ion cyclotron resonance cells

    公开(公告)号:US08766174B1

    公开(公告)日:2014-07-01

    申请号:US14096847

    申请日:2013-12-04

    CPC classification number: H01J49/38

    Abstract: The invention relates to a method and a device for optimization of electric fields in measurement cells of Fourier transform ion cyclotron resonance mass spectrometers. The invention is based on the rationale that asymmetric electric fields with uniformly or non-uniformly perturbed field axes can appear in ion cyclotron resonance cells and therefore the axis of the magnetron orbit can become radially displaced. Shifted magnetron orbits negatively affect the cyclotron excitation, deteriorate the FT-ICR signal, increase the intensity of an even-numbered harmonics peak, lead to stronger side bands of the FT-ICR signal, and in extreme cases, cause loss of ions. The present invention helps in probing the shift of the magnetron motion, detecting parameters indicative of the offset of the electric field axis and/or correcting it by trimming it back to the geometric axis of the cell.

    DYNAMICALLY HARMONIZED FT-ICR CELL WITH SPECIALLY SHAPED ELECTRODES FOR COMPENSATION OF INHOMOGENEITY OF THE MAGNETIC FIELD
    49.
    发明申请
    DYNAMICALLY HARMONIZED FT-ICR CELL WITH SPECIALLY SHAPED ELECTRODES FOR COMPENSATION OF INHOMOGENEITY OF THE MAGNETIC FIELD 有权
    用于补偿磁场非均匀性的特殊形状电极的动态协调FT-ICR单元

    公开(公告)号:US20140070090A1

    公开(公告)日:2014-03-13

    申请号:US14024419

    申请日:2013-09-11

    CPC classification number: H01J49/38 H01J49/0027 H01J49/34

    Abstract: A method and apparatus of compensating a magnetic field inhomogeneity in a dynamically harmonized FT-ICR cell is presented, based on adding of extra electrodes into the cell, the extra electrodes being shaped in such a way that the averaged electric field created by these electrodes produces a counter force to the forces caused by the inhomogeneous magnetic field on the cycling ions.

    Abstract translation: 提出了一种在动态协调的FT-ICR单元中补偿磁场不均匀性的方法和装置,基于向单元中添加额外的电极,额外的电极被成形为使得由这些电极产生的平均电场产生 对由循环离子上的不均匀磁场引起的力的反作用力。

    Method and apparatus for analyzing hydrocarbon streams

    公开(公告)号:US20050109934A1

    公开(公告)日:2005-05-26

    申请号:US10717833

    申请日:2003-11-20

    Applicant: Dean Davis

    Inventor: Dean Davis

    CPC classification number: H01J49/38

    Abstract: The present invention is a method and apparatus for identifying a mixture of particles using a Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS). The particles are first reacted in a charge exchange reaction within the FT-ICR MS chamber using ionic partners that are chosen to discriminate among components of the mixture based on ionization potential. Mass spectra of test runs using different ionic partners may then be compared to identify components based on information gathered about both molecular mass and ionization potential.

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