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    • 34. 发明授权
    • Mass spectrometer
    • 质谱仪
    • US07566870B2
    • 2009-07-28
    • US11446141
    • 2006-06-05
    • Hideki HasegawaYuichiro HashimotoIzumi Waki
    • Hideki HasegawaYuichiro HashimotoIzumi Waki
    • H01J49/42
    • H01J49/4225H01J49/4265
    • A mass spectrometer capable of realizing a high-sensitivity ion analysis and a high ion selectivity performance. The mass spectrometer includes the ion source where ions are produced, the ion trap where ions are accumulated, isolated, dissociated, and ejected, the detector to detect ions to be detected, and the controller to control operations of the ion trap. It has the features that the total ion accumulation in or just before each period is calculated based on the result obtained from the mass spectrometry in the preceding period, and that in at least one out of all periods, the condition of voltage applied to the ion trap is corrected depending on the total ion accumulation. Compared to the related art, the mass spectrometer of the present invention provides much improved performance in analysis sensitivity and ion selectivity.
    • 能够实现高灵敏度离子分析和高离子选择性的质谱仪。 质谱仪包括产生离子的离子源,其中离子聚集,分离,离解和喷射的离子阱,检测器检测要被检测的离子,以及控制器来控制离子阱的操作。 其特征在于,基于从前一期间的质谱获得的结果计算出每个周期之前或之前的总离子积聚,并且在至少一个周期内计算施加到离子的电压的条件 根据总离子积聚校正捕获阱。 与现有技术相比,本发明的质谱仪在分析灵敏度和离子选择性方面提供了大大改进的性能。
    • 38. 发明申请
    • Mass spectrometer and mass analysis method
    • 质谱仪和质量分析方法
    • US20060219896A1
    • 2006-10-05
    • US11325444
    • 2006-01-05
    • Yuichiro HashimotoHideki HasegawaIzumi Waki
    • Yuichiro HashimotoHideki HasegawaIzumi Waki
    • H01J49/00B01D59/44
    • H01J49/0027H01J49/4225
    • A linear trap which allows for charge separation and ion mobility separation in a speedy manner, and enables measurement with high duty cycle. A mass spectrometer comprises an ion source, an ion trap for trapping ions ionized by the ion source, an ion trap controller for controlling a voltage on an electrode included in the ion trap, and a detector for detecting the ions ejected from the ion trap. The ion trap controller includes a table for each mass-to-charge ratio, the table containing a frequency of the voltage used for charge separation, and a gain of the voltage for ejecting a first ion with a first charge outside the ion trap, and retaining in the ion trap a second group of ions with a second charge that is lower than that of the first charge. The ion trap controller controls the voltage based on the mass-to-charge ratio set. The mass spectrometer has significantly improved sensitivity, as compared to the prior art.
    • 线性阱可以快速分离电荷和离子迁移分离,并能够以高占空比进行测量。 质谱仪包括离子源,用于捕获由离子源离子化的离子的离子阱,用于控制离子阱中包含的电极上的电压的离子阱控制器和用于检测从离子阱排出的离子的检测器。 离子阱控制器包括用于每个质荷比的表,该表包含用于电荷分离的电压的频率,以及用于在离子阱外部用第一电荷喷射第一离子的电压的增益,以及 在离子阱中保留具有低于第一电荷的第二组电荷的第二组离子。 离子阱控制器根据设定的质荷比来控制电压。 与现有技术相比,质谱仪具有显着提高的灵敏度。
    • 40. 发明申请
    • Mass spectrometer
    • 质谱仪
    • US20050269504A1
    • 2005-12-08
    • US11146157
    • 2005-06-07
    • Yuichiro HashimotoHideki HasegawaTakashi BabaHiroyuki SatakeIzumi Waki
    • Yuichiro HashimotoHideki HasegawaTakashi BabaHiroyuki SatakeIzumi Waki
    • G01N27/62H01J49/06H01J49/16H01J49/40H01J49/42
    • H01J49/4225H01J49/004H01J49/4265
    • A mass spectrometer using a linear ion trap capable of efficiently suppressing the space charge and enabling scanning for a wide m/z range at a high Duty Cycle is provided. The mass spectrometer comprises: an ion source for ionizing a specimen to generate ions, an ion transport portion for transporting the ions, a linear ion trap portion for accumulating the transported ions by a potential formed axially, and a control portion of ejecting the ions within a second m/z range different from a first m/z range from the linear ion trap portion substantially at the same timing as the timing of accumulating the ions within the first m/z range to the linear ion trap portion, in which the control portion conducts control of ejecting the ions mass selectively from the linear ion trap portion by any of voltage application of (1) applying a supplemental AC voltage between at least a pair of linear ion trap rods constituting the linear ion trap portion, (2) applying a supplemental AC voltage to an end lens constituting the linear ion trap portion, and (3) applying a supplemental AC voltage between inserted lenses, the inserted lenses constituting the linear ion trap portion. The ion transportation portion having a mass selection means for selecting the ions in the first m/z range.
    • 提供了使用能够有效地抑制空间电荷且能够在高占空比下扫描宽m / z范围的线性离子阱的质谱仪。 该质谱仪包括:用于离子化离子的离子源,用于输送离子的离子传输部分,用于通过轴向形成的电势积聚运送的离子的线性离子捕获部分,以及将离子排出的控制部分 基本上与在线性离子阱部分内将离子累积到第一m / z范围内的时刻相同的定时,与线性离子阱部分的第一m / z范围不同的第二m / z范围,其中控制 通过施加(1)在构成线性离子阱部分的至少一对线性离子阱捕获棒之间施加补充AC电压的任何电压施加(2)施加的线性离子阱部分, 构成线性离子阱部分的端部透镜的补充AC电压,以及(3)在插入的透镜之间施加补充AC电压,构成线性离子阱po的插入透镜 rtion。 该离子传送部分具有用于选择第一m / z范围内的离子的质量选择装置。