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    • 9. 发明申请
    • MICROCHANNEL PLATE DETECTOR ASSEMBLY FOR A TIME-OF-FLIGHT MASS SPECTROMETER
    • 用于飞行时间质谱仪的微通道板检测器总成
    • WO0193306A2
    • 2001-12-06
    • PCT/US0116695
    • 2001-05-23
    • UNIV JOHNS HOPKINSCORNISH TIMOTHY JECELBERGER SCOTT A
    • CORNISH TIMOTHY JECELBERGER SCOTT A
    • H01J49/02H01J49/40H01J49/00
    • H01J43/246H01J49/025H01J49/40
    • A method is provided for reducing signal ringing in a microchannel plate detector assembly having a cylindrical mount with a center tube extending through at least a portion of the assembly, in a mass spectrometer including the steps of providing the microchannel plate detector assembly with a pin anode extending from the cylindrical mount and located in proximity to the center tube; holding a front portion of the assembly at ground potential; setting a middle portion of the assembly between the front portion and a rear portion to a first voltage potential for accelerating ions; holding the rear portion of the assembly to a second voltage potential; holding the pin anode at a third voltage potential; and accelerating electrons emitted from the middle portion of the assembly toward the pin anode. The third voltage potential is established by an amplifier of an oscilloscope connected to the detector assembly.
    • 提供了一种用于减小微通道板检测器组件中的信号振铃的方法,所述微通道板检测器组件具有圆柱形安装件,所述圆柱形安装件具有延伸穿过所述组件的至少一部分的中心管,质谱仪包括以下步骤:为所述微通道板检测器组件提供引脚阳极 从圆柱形支架延伸并位于中心管附近; 将组件的前部部分保持在地电位; 将组件的前部和后部之间的中间部分设置为用于加速离子的第一电压电位; 将组件的后部保持在第二电压电位; 将引脚阳极保持在第三电压电位; 并且将从组件的中间部分发射的电子加速到针状阳极。 第三电压电位由连接到检测器组件的示波器的放大器建立。