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    • 87. 发明授权
    • Mass spectrometer
    • 质谱仪
    • US06794641B2
    • 2004-09-21
    • US10448059
    • 2003-05-30
    • Robert Harold BatemanKevin GilesSteve Pringle
    • Robert Harold BatemanKevin GilesSteve Pringle
    • H01J4940
    • H01J49/062H01J49/004
    • A mass spectrometer is disclosed wherein ions from a pulsed ion source are dispersed in a drift region so that the ions become separated according to their mass to charge ratios. The ions are then received by an ion guide in which multiple trapping regions are created and wherein the multiple trapping regions are translated along the length of the ion guide. The ion guide receives the ions so that all the ions trapped in a particular trapping region have substantially the same or similar mass to charge ratios. The ions are released from the exit of the ion guide and the pusher/puller electrode of an orthogonal acceleration Time of Flight mass analyzer is arranged to be energised in synchronization with the ions emerging from the ion guide. The trapping regions may be translated along the ion guide with a velocity which becomes progressively slower and the delay time of the pusher/puller electrode may be progressively increased.
    • 公开了一种质谱仪,其中来自脉冲离子源的离子分散在漂移区域中,使得离子根据其质荷比分离。 然后由离子导向器接收离子,其中产生多个俘获区域,并且其中多个俘获区域沿离子导向件的长度平移。 离子导向器接收离子,使得捕获在特定捕获区域中的所有离子具有基本上相同或相似的质荷比。 离子从离子导向器的出口释放,并且正交加速时间飞行质量分析器的推动器/牵引电极被布置成与从离子导向器出射的离子同步地通电。 俘获区域可以沿着离子导向器平移,速度逐渐变慢,并且推动器/拉电极的延迟时间可以逐渐增加。