Mobility spectrometer
    4.
    发明授权
    Mobility spectrometer 有权
    移动光谱仪

    公开(公告)号:US06897437B2

    公开(公告)日:2005-05-24

    申请号:US09798030

    申请日:2001-02-28

    IPC分类号: G01N27/64 H01J49/16 H01J49/40

    CPC分类号: G01N27/622 H01J49/06

    摘要: The present invention relates to an improved ion mobility spectrometer and method for the analysis of chemical samples. The improvements are realized in the optimization of resolution and sensitivity. Increases in sensitivity are realized by preserving a narrow spatial distribution of migrating ions through the use of periodic/hyperbolic field focusing. Additionally, novel combinations and configurations of components are used to simultaneously maintain a well defined ion packet and preserve sample throughput to the detector.

    摘要翻译: 本发明涉及一种改进的离子迁移谱仪和用于分析化学样品的方法。 在优化分辨率和灵敏度方面实现了改进。 灵敏度的提高是通过使用周期性/双曲线场聚焦来保持迁移离子的窄空间分布来实现的。 另外,使用组件的新颖组合和配置来同时维持明确定义的离子包并且将样品通量保持在检测器上。

    Periodic field focusing ion mobility spectrometer
    5.
    发明授权
    Periodic field focusing ion mobility spectrometer 失效
    周期场聚焦离子迁移谱仪

    公开(公告)号:US06639213B2

    公开(公告)日:2003-10-28

    申请号:US09798032

    申请日:2001-02-28

    IPC分类号: H01J4900

    CPC分类号: G01N27/622 H01J49/06

    摘要: This invention is generally in the field of improved ion mobility spectrometry. The improvement lies in the use of periodic focusing electric fields that minimize the spatial spread of the migrating ions by keeping them in a tight radius about the axis of travel. The resulting enhancement in sensitivity is accomplished without a concomitant loss in resolution as would normally be expected when non-linear fields are used.

    摘要翻译: 本发明通常在改进的离子迁移光谱法领域。 改进之处在于使用周期性聚焦电场,通过将迁移离子保持在围绕行进轴线的紧密半径来最小化迁移离子的空间扩散。 所产生的灵敏度的提高在没有随着使用非线性场的情况下预期的分辨率的同时损失的情况下完成。