Gas Electron Multiplier Detector
    52.
    发明申请
    Gas Electron Multiplier Detector 有权
    气体电子倍增检测器

    公开(公告)号:US20110024616A1

    公开(公告)日:2011-02-03

    申请号:US12745265

    申请日:2008-12-01

    CPC classification number: H01J49/025 H01J47/02

    Abstract: A mass spectrometer is disclosed comprising a Gas Electron Multiplier ion detector. The ion detector comprises three gas electron multiplier stages GEM1, GEM2, GEM3 wherein a counter electrode (12) is arranged adjacent the first electron multiplier stage GEM1.

    Abstract translation: 公开了一种质谱仪,其包括气体电子倍增器离子检测器。 离子检测器包括三个气体电子倍增器级GEM1,GEM2,GEM3,其中相对电极(12)被布置为与第一电子倍增器级GEM1相邻。

    MASS SPECTROMETER
    54.
    发明申请
    MASS SPECTROMETER 有权
    质谱仪

    公开(公告)号:US20100065737A1

    公开(公告)日:2010-03-18

    申请号:US11721260

    申请日:2005-12-08

    CPC classification number: H01J49/062 H01J49/004

    Abstract: A mass spectrometer is disclosed comprising a mass selective ion trap or mass analyser (4) arranged upstream of an ion guide (6). Ions are scanned out of the mass selective ion trap or mass analyser (4) and are received in one or more axial potential wells created or formed within the ion guide (6). One or more transient DC voltages or potentials are preferably applied to the ion guide (6) in order to create a plurality of axial potential wells which are translated along the length of the ion guide (6). Ions are released in packets from the exit of the ion guide (6) and are orthogonally accelerated into a drift or flight region of an orthogonal acceleration Time of Flight mass analyser (13) with a relatively high duty cycle.

    Abstract translation: 公开了一种质谱仪,其包括布置在离子导向器(6)上游的质量选择性离子阱或质量分析器(4)。 从质量选择性离子阱或质量分析器(4)中扫描离子,并将其接收在离子导向器(6)内产生或形成的一个或多个轴向势阱中。 优选地将一个或多个瞬态DC电压或电位施加到离子导向器(6),以便产生沿离子导向件(6)的长度平移的多个轴向势阱。 从离子导向器(6)的出口以分组的形式释放离子,并以相对较高的占空比正交加速到正交加速时间飞行质量分析器(13)的漂移或飞行区域。

    Mass Spectrometer
    56.
    发明申请
    Mass Spectrometer 有权
    质谱仪

    公开(公告)号:US20090121123A1

    公开(公告)日:2009-05-14

    申请号:US11916438

    申请日:2006-06-05

    CPC classification number: H01J49/427 H01J49/4235

    Abstract: 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.

    Abstract translation: 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
    57.
    发明申请
    Mass Spectrometer 有权
    质谱仪

    公开(公告)号:US20080135746A1

    公开(公告)日:2008-06-12

    申请号:US11574554

    申请日:2005-09-14

    CPC classification number: H01J49/005

    Abstract: A mass spectrometer is disclosed comprising an ion mobility spectrometer or separator (3) arranged upstream of a collision or fragmentation cell (5). Ions are separated according to their ion mobility within the ion mobility spectrometer or separator (3). The kinetic energy of the ions exiting the ion mobility spectrometer or separator (3) is increased substantially linearly with time in order to optimise the fragmentation energy of ions as they enter the collision or fragmentation cell (5).

    Abstract translation: 公开了一种质谱仪,其包括设置在碰撞或破碎电池(5)的上游的离子迁移谱仪或分离器(3)。 离子在离子迁移谱仪或分离器(3)内根据其离子迁移率分离。 离子离子迁移谱仪或分离器(3)离子的动能随时间呈线性增加,以优化离子进入碰撞或破碎电池(5)时的碎裂能。

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