MASS SPECTROMETER
    23.
    发明申请
    MASS SPECTROMETER 有权
    质谱仪

    公开(公告)号:US20100294923A1

    公开(公告)日:2010-11-25

    申请号:US12445774

    申请日:2007-10-16

    IPC分类号: H01J49/26 H01J49/06

    摘要: A collision or fragmentation cell (4) is disclosed comprising a plurality of electrodes wherein a first RF voltage (7a) is applied to an upstream group of electrodes and a second different RF voltage (7b) is applied to a downstream group of electrodes. The radial confinement of parent ions entering the collision or fragmentation cell (4) is optimised by the first RF voltage applied to the upstream group of electrodes and the radial confinement of daughter or fragment ions produced within the collision or fragmentation cell (4) is optimised by the second different RF voltage applied to the downstream group of electrodes.

    摘要翻译: 公开了一种碰撞或分裂单元(4),其包括多个电极,其中将第一RF电压(7a)施加到上游电极组,并且将第二不同RF电压(7b)施加到下游电极组。 通过施加到上游电极组的第一RF电压来优化进入碰撞或破碎电池(4)的母体离子的径向约束,并且优化在碰撞或断裂电池(4)内产生的子或碎片离子的径向约束 通过施加到下游组电极的第二不同RF电压。

    Mass spectrometer
    26.
    发明授权
    Mass spectrometer 有权
    质谱仪

    公开(公告)号:US08153960B2

    公开(公告)日:2012-04-10

    申请号:US11916438

    申请日:2006-06-05

    IPC分类号: H01J49/26

    CPC分类号: H01J49/427 H01J49/4235

    摘要: An ion guide or ion trap (1) is disclosed having an entrance electrode (2) and an exit electrode (3). The potential of the exit electrode (3) is periodically dropped for a relatively short period of time allowing some ions to escape from the ion guide or ion trap (1) via an aperture in the exit electrode (3). The period of time that the potential of the exit electrode (3) is dropped for is progressively increased and ions emerge from the ion guide or ion trap (1) in a mass to charge ratio dependent manner. The ion guide or ion trap (1) may be operated as a mass separator or low resolution mass analyser.

    摘要翻译: 公开了一种具有入口电极(2)和出口电极(3)的离子导向器或离子阱(1)。 出口电极(3)的电位周期性地下降相当短的时间段,允许一些离子通过出射电极(3)中的孔从离子导向器或离子阱(1)逸出。 退出电极(3)的电位下降的时间段逐渐增加,并且离子导向器或离子阱(1)以质荷比依赖的方式出现离子。 离子导向器或离子阱(1)可以作为质量分离器或低分辨率质量分析器来操作。

    Mass Spectrometer
    27.
    发明申请
    Mass Spectrometer 有权
    质谱仪

    公开(公告)号:US20100032561A1

    公开(公告)日:2010-02-11

    申请号:US12518291

    申请日:2007-12-12

    IPC分类号: H01J49/26

    摘要: A mass spectrometer is disclosed comprising a device (2) which is operable in a first mode of operation to separate ions temporally according to their ion mobility by applying a continuous axial electric field. The device (2) is also operable in a second mode of operation wherein ions are separated temporally according to the their mass to charge ratio by pulsing an applied axial electric field ON and OFF.

    摘要翻译: 公开了一种质谱仪,其包括可在第一操作模式中操作的装置(2),其通过施加连续轴向电场根据其离子迁移率暂时分离离子。 装置(2)还可在第二操作模式中操作,其中通过脉冲施加的轴向电场ON和OFF,离子根据其质荷比逐时分离。

    Mass Spectrometer
    28.
    发明申请
    Mass Spectrometer 有权
    质谱仪

    公开(公告)号:US20120199734A1

    公开(公告)日:2012-08-09

    申请号:US13435877

    申请日:2012-03-30

    IPC分类号: H01J49/40 H01J49/26

    CPC分类号: H01J49/427 H01J49/4235

    摘要: An ion guide or ion trap is disclosed having an entrance electrode and an exit electrode. The potential of the exit electrode is periodically dropped for a relatively short period of time allowing some ions to escape from the ion guide or ion trap via an aperture in the exit electrode. The period of time that the potential of the exit electrode is dropped for is progressively increased and ions emerge from the ion guide or ion trap in a mass to charge ratio dependent manner. The ion guide or ion trap may be operated as a mass separator or low resolution mass analyser.

    摘要翻译: 公开了一种具有入口电极和出射电极的离子导向器或离子阱。 出口电极的电位周期性地下降相当短的时间段,允许一些离子通过出射电极的孔离开离子导向器或离子阱。 出口电极的电位下降的时间段逐渐增加,并且离子导向器或离子阱以质荷比依赖的方式出现离子。 离子导向器或离子阱可以作为质量分离器或低分辨率质量分析器来操作。

    Mass spectrometer
    29.
    发明授权
    Mass spectrometer 有权
    质谱仪

    公开(公告)号:US07683314B2

    公开(公告)日:2010-03-23

    申请号:US10599572

    申请日:2005-04-04

    IPC分类号: H01J49/04

    CPC分类号: H01J49/06 Y10T436/24

    摘要: A mass spectrometer is disclosed comprising an ion beam attenuator which attenuates an ion beam repeatedly switching between a zero transmission mode of operation during a time period ΔT1 and a non-zero transmission mode of operation during a time period ΔT2. The degree of attenuation of the ion beam can be varied by varying the mark space ratio ΔT2/ΔT1. The ion beam attenuator may release ions in packets or pulses but the packets or pulses of ions may be converted into a continuous ion beam by a relatively high pressure ion guide or gas collision cell arranged downstream of the ion beam attenuator.

    摘要翻译: 公开了一种质谱仪,其包括离子束衰减器,该离子束衰减器衰减离子束在时间段Dgr; T1期间的零传输操作模式和在时间段Dgr; T2期间的非零传输操作模式之间重复切换。 可以通过改变标记空间比&Dgr; T2 /&Dgr; T1来改变离子束的衰减程度。 离子束衰减器可以以分组或脉冲的形式释放离子,但是离子束或脉冲可以通过布置在离子束衰减器下游的相对高压的离子导向器或气体碰撞元件转换为连续的离子束。

    Mass spectrometer
    30.
    发明授权
    Mass spectrometer 有权
    质谱仪

    公开(公告)号:US08519328B2

    公开(公告)日:2013-08-27

    申请号:US13435877

    申请日:2012-03-30

    IPC分类号: H01J49/26

    CPC分类号: H01J49/427 H01J49/4235

    摘要: An ion guide or ion trap is disclosed having an entrance electrode and an exit electrode. The potential of the exit electrode is periodically dropped for a relatively short period of time allowing some ions to escape from the ion guide or ion trap via an aperture in the exit electrode. The period of time that the potential of the exit electrode is dropped for is progressively increased and ions emerge from the ion guide or ion trap in a mass to charge ratio dependent manner. The ion guide or ion trap may be operated as a mass separator or low resolution mass analyzer.

    摘要翻译: 公开了一种具有入口电极和出射电极的离子导向器或离子阱。 出口电极的电位周期性地下降相当短的时间段,允许一些离子通过出射电极的孔离开离子导向器或离子阱。 出口电极的电位下降的时间段逐渐增加,并且离子导向器或离子阱以质荷比依赖的方式出现离子。 离子导向器或离子阱可以作为质量分离器或低分辨率质量分析器来操作。