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    Electrical interference reducer for gating apparatus of an electro multiplier
    1.
    发明授权
    Electrical interference reducer for gating apparatus of an electro multiplier 失效
    用于电动机的加热装置的电气干扰减速器

    公开(公告)号：US3644775A

    公开(公告)日：1972-02-22

    申请号：US3644775D

    申请日：1969-11-07

    Applicant: BENDIX CORP

    Inventor： DAMOTH DONALD C ,  SHRINER WILLIAM H

    IPC: H01J43/12 ,  H01J49/02 ,  H01J1/00

    CPC classification number: H01J43/12 ,  H01J49/025

    Abstract: An apparatus for eliminating noise at the oscilloscope output of a magnetic electron multiplier by arranging the output anodes of the gating section so that the oscilloscope output anode is located on a different axis than the other output anodes and is protected from electromagnetic interference by a shield located between the oscilloscope anode and the other output anodes. The oscilloscope anode is preferably cup-shaped to prevent the escape of electrons impinging the anode.

    Mass spectrometer having means compensating electron transit time across the cathode of the electron multiplier
    4.
    发明授权
    Mass spectrometer having means compensating electron transit time across the cathode of the electron multiplier 失效
    具有电子倍增器阴极电子传输时间的手段的质谱仪

    公开(公告)号：US3660654A

    公开(公告)日：1972-05-02

    申请号：US3660654D

    申请日：1969-09-15

    Applicant: BENDIX CORP

    Inventor： DAMOTH DONALD C ,  SHRINER WILLIAM H

    IPC: H01J49/02 ,  H01J49/26 ,  H01J49/40 ,  H01J39/34

    CPC classification number: H01J49/40 ,  H01J49/025

    Abstract: To improve the resolution of a mass spectrometer the emissive surface of the cathode for the electron multiplier is precisely angled with respect to the plane perpendicular to the axis of the ion focusing tube so that all ions of the same mass which pass through that plane at the same time impinge on those portions of the cathode surface closest to and farthest from the dynode cause electrons secondarily emitted therefrom to impinge upon the dynode at substantially the same time. This shortens the duration of the mass spectrum signals making it easier to distinguish one mass-spectrum line from another in the 200-500 amu range.

    Abstract translation: 为了提高质谱仪的分辨率，电子倍增器的阴极的发射表面相对于垂直于离子聚焦管的轴线的平面精确成角度，使得具有相同质量的所有离子通过该平面在 同时撞击最靠近并且距离倍增极最远的阴极表面的那些部分，导致二次发射的电子在基本相同的时间撞击在倍增极上。 这缩短了质谱信号的持续时间，使得在200-500 amu范围内更容易区分一个质谱线与另一个质谱线。

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