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    • 2. 发明授权
    • Apparatus and method for ion cyclotron resonance mass spectrometry
    • 离子回旋共振质谱仪的设备和方法
    • US06720555B2
    • 2004-04-13
    • US10338423
    • 2003-01-08
    • Peter B. O'Connor
    • Peter B. O'Connor
    • H01J4940
    • H01J49/38
    • An apparatus and method for performing ion mass spectrometry via Fourier transform ion cyclotron resonance utilizes a superconducting magnet with a bore and a vacuum chamber received in the magnet bore. The superconducting magnet and the vacuum chamber are enclosed in a cooling chamber and cooled together until the operating temperature of the magnet is reached. Because the temperature of the vacuum chamber is similar to the operating temperature of the superconducting magnet during operation, the wall of the vacuum chamber is sufficiently cold to function as a cryogenic vacuum pump to provide enhanced pumping of the volume in the vacuum chamber. The approach of cooling the vacuum chamber wall to provide cryogenic pumping can also be used when the magnet is of a non-superconducting type.
    • 通过傅里叶变换离子回旋加速器谐振进行离子质谱的装置和方法利用具有容纳在磁体孔中的孔和真空室的超导磁体。 将超导磁体和真空室封闭在冷却室中并一起冷却直到磁体的工作温度达到。 由于真空室的温度与操作过程中的超导磁体的工作温度相似,所以真空室的壁足够冷,可用作低温真空泵,以提供对真空室中体积的增强泵送。 当磁体为非超导型时,还可以使用冷却真空室壁以提供低温泵送的方法。