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    • 10. 发明授权
    • Ion mobility separator with variable effective length
    • 具有可变有效长度的离子迁移分离器
    • US08829433B2
    • 2014-09-09
    • US14004486
    • 2012-03-13
    • Martin Raymond GreenDavid J. LangridgeJason Lee Wildgoose
    • Martin Raymond GreenDavid J. LangridgeJason Lee Wildgoose
    • B01D59/44H01J49/36
    • H01J49/36G01N27/624H01J49/06H01J49/42H01J49/426
    • An ion mobility separator or spectrometer is disclosed comprising an inner cylinder and an outer cylinder defining an annular volume through which ions are transmitted. Spiral electrodes a-f are arranged on a surface of the inner cylinder and/or on a surface of the outer cylinder. A first device is arranged and adapted to maintain a DC electric field or a pseudo-potential force which acts to urge ions from a first end of the ion mobility separator or spectrometer to a second end of the ion mobility separator or spectrometer. A second device is arranged and adapted to apply one or more transient DC voltages to the spiral electrodes in order to urge ions towards the first end of the ion mobility separator or spectrometer. The net effect is to extend the effective path length of the ion mobility separator.
    • 公开了一种离子迁移率分离器或光谱仪,其包括限定通过离子传播的环形体积的内圆筒和外圆筒。 螺旋电极a-f布置在内筒的表面上和/或外筒的表面上。 第一装置被布置并适于维持DC电场或伪电势力,其作用是将离子从离子迁移率分离器或光谱仪的第一端推到离子迁移率分离器或光谱仪的第二端。 第二装置被布置并适于将一个或多个瞬态DC电压施加到螺旋电极,以促使离子朝向离子迁移分离器或光谱仪的第一端。 净效应是延长离子迁移率分离器的有效路径长度。