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    • 1. 发明授权
    • Mass spectrometry apparatus and methods
    • 质谱仪和方法
    • US08975579B2
    • 2015-03-10
    • US13582231
    • 2011-03-02
    • David BreamChristopher NewmanBrian Christopher Webb
    • David BreamChristopher NewmanBrian Christopher Webb
    • H01J49/40H01J49/34H01J49/44
    • H01J49/34H01J49/443
    • A mass spectrometer having a mass filter which applies a transient voltage profile to accelerate ion packets. The voltage profile is chosen to have a functional form which imparts each ion species with a kinetic energy which is larger the larger the mass-to-charge ratio and a velocity which is smaller the larger the mass-to-charge ratio. The ions are detected in an ion detector which discriminates between different ion species based on their kinetic energy and taking account of the functional form of the voltage profile. Suitable voltage profiles include periodic functions such as sinusoids, triangles and sawtooths, which allow the amplification of drive pulses in the mass filter to be carried out with narrow band amplification stages, which are simple and inexpensive to construct.
    • 具有质量过滤器的质谱仪,其施加瞬态电压分布以加速离子包。 电压分布被选择为具有赋予每个离子种类具有较大质量 - 电荷比越大的动能的功能形式,并且质量与电荷比越大的速度越小。 在离子检测器中检测离子,其基于它们的动能鉴别不同的离子种类,并考虑到电压分布的功能形式。 合适的电压曲线包括诸如正弦曲线,三角形和锯齿的周期性函数,其允许通过窄带放大级来进行质量滤波器中的驱动脉冲的放大,这是简单且便宜的构造。
    • 2. 发明申请
    • MASS SPECTROMETRY APPARATUS AND METHODS
    • 质谱仪器和方法
    • US20120318972A1
    • 2012-12-20
    • US13582231
    • 2011-03-02
    • David BreamChristopher NewmanBrian Christopher Webb
    • David BreamChristopher NewmanBrian Christopher Webb
    • H01J49/26
    • H01J49/34H01J49/443
    • A mass spectrometer having a mass filter which applies a transient voltage profile to accelerate ion packets. The voltage profile is chosen to have a functional form which imparts each ion species with a kinetic energy which is larger the larger the mass-to- charge ratio and a velocity which is smaller the larger the mass-to-charge ratio. The ions are detected in an ion detector which discriminates between different ion species based on their kinetic energy and taking account of the functional form of the voltage profile. Suitable voltage profiles include periodic functions such as sinusoids, triangles and sawtooths, which allow the amplification of drive pulses in the mass filter to be carried out with narrow band amplification stages, which are simple and inexpensive to construct.
    • 具有质量过滤器的质谱仪,其施加瞬态电压分布以加速离子包。 电压分布被选择为具有赋予每个离子种类的功能形式,其动能越大,质荷比越大,质荷比越大,速度越小。 在离子检测器中检测离子,其基于它们的动能鉴别不同的离子种类,并考虑到电压分布的功能形式。 合适的电压曲线包括诸如正弦曲线,三角形和锯齿的周期性函数,其允许通过窄带放大级来进行质量滤波器中的驱动脉冲的放大,这是简单且便宜的构造。