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    • 89. 发明申请
    • Mass Spectrometer
    • 质谱仪
    • US20120208289A1
    • 2012-08-16
    • US13453657
    • 2012-04-23
    • Martin R. GreenJason Lee WildgooseJeffery Mark Brown
    • Martin R. GreenJason Lee WildgooseJeffery Mark Brown
    • G01N27/62
    • H01J49/0481H01J49/0072H01J49/065H01J49/40Y10T436/24
    • A mass spectrometer is disclosed comprising an Electron Transfer Dissociation cell. Positive analyte ions are fragmented into fragment ions upon colliding with singly charged negative reagent ions with the cell. The cell comprises a plurality of ring electrodes which form a spherical trapping volume. Ions experience negligible RF heating over the majority of the trapping volume which enables the kinetic energy of the analyte and reagent ions to be reduced to just above thermal temperatures. An Electron Transfer Dissociation cell having an enhanced sensitivity is thereby provided. Fragment ions created within the cell may be cooled and may be transmitted onwardly to an orthogonal acceleration Time of Flight mass analyser enabling a significant improvement in the resolution of the mass analyser to be obtained.
    • 公开了一种质谱仪,其包括电子转移解离单元。 当与单体电荷的负试剂离子碰撞时,阳性分析物离子被碎裂成碎片离子。 电池包括形成球形捕获体积的多个环形电极。 在大多数捕集体积下,离子经历可忽略的RF加热,使得分析物和试剂离子的动能能够降低到高于热温度。 从而提供具有增强的灵敏度的电子转移解离电池。 在细胞内产生的片段离子可以被冷却并且可以向内传播到正交加速时间飞行质量分析仪,使得可以获得质量分析仪的分辨率的显着提高。