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    • 10. 发明授权
    • Mass spectrometer
    • 质谱仪
    • US08507849B2
    • 2013-08-13
    • US11721755
    • 2005-12-19
    • Jeffery Mark Brown
    • Jeffery Mark Brown
    • H01J49/40
    • H01J49/004H01J49/0031H01J49/401
    • A mass spectrometer is disclosed comprising a MALDI ion source coupled to an orthogonal acceleration Time of Flight mass analyzer. The mass spectrometer is operated at a first instrument setting wherein specific parent ions are selected by a mass filter and are accelerated to a first axial energy. The fragment ions are then orthogonally accelerated after a first delay time and first mass spectral data is obtained. The mass spectrometer is then operated at a second instrument setting wherein the axial energy of the parent ions is increased and the resulting fragment ions are orthogonally accelerated after a reduced delay time. Second mass spectral data is then obtained. The first and second mass spectral data are then combined to provided a final composite mass spectrum.
    • 公开了一种质谱仪,其包括耦合到正交加速时间飞行质量分析仪的MALDI离子源。 质谱仪在第一仪器设置下操作,其中通过质量过滤器选择特定的母体离子并加速至第一轴向能量。 然后,在获得第一延迟时间和第一质谱数据之后,片段离子被正交加速。 然后质谱仪在第二仪器设置下操作,其中母离子的轴向能量增加,并且所产生的碎片离子在减小的延迟时间之后被正交加速。 然后获得第二质谱数据。 然后组合第一和第二质谱数据以提供最终的复合质谱。