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    • 82. 发明授权
    • Ultra-sensitive spectrometer for making mass and elemental analyses
    • 用于进行质量和元素分析的超灵敏光谱仪
    • US4037100A
    • 1977-07-19
    • US662968
    • 1976-03-01
    • Kenneth H. Purser
    • Kenneth H. Purser
    • G21K1/14H01J49/00H01J49/30B01D59/44G01K1/08H01J23/00
    • H01J49/0086G21K1/14
    • The present invention comprehends an extremely sensitive apparatus which can be used for the detection of electronegative particles and provide data as to their elemental composition. A mass spectrometer selects negative ions of the required mass coming from an ion source. These ions are then directed into a dissociator which fragments complex molecules and strips electrons from the resulting products producing positively charged ions. These positively charged ions are filtered by a series of elements which independently measure some combination of the quantities: energy/charge, energy, momentum/charge, velocity, charge. Such measurement allows the actual mass of each particle to be uniquely defined and, if necessary, over-determined for reduction of backgrounds.
    • 本发明包括可用于检测电负性颗粒并提供其元素组成数据的极敏感装置。 质谱仪选择离子源所需质量的负离子。 这些离子然后被引导到解离器中,其解离复合分子并从产生产生带正电荷的离子产生的产物中剥离电子。 这些带正电荷的离子被一系列元素过滤,这些元素独立地测量了能量/电荷,能量,动量/电荷,速度,电荷的量的某种组合。 这种测量允许每个粒子的实际质量被唯一地定义,并且如果需要,可以过度确定以减少背景。