会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Mass spectrometer
    • 质谱仪
    • US07199363B2
    • 2007-04-03
    • US10964791
    • 2004-10-14
    • Robert Harold BatemanJeffery Mark BrownDaniel James Kenny
    • Robert Harold BatemanJeffery Mark BrownDaniel James Kenny
    • B01D59/44H01J49/00
    • H01J49/405H01J49/0031
    • A mass spectrometer is disclosed comprising an ion source 4, a field free or drift region 5 and an ion mirror 7 comprising a reflectron. Metastable parent ions which spontaneously fragment by Post Source Decay whilst passing through the field free or drift region 5 are arranged to enter the ion mirror 7 and be reflected by the reflectron towards an ion detector 8 when the reflectron is maintained at a certain voltage. The process is then repeated with the reflectron being maintained at a slightly lower voltage. Two related sets of time of flight or mass spectral data are obtained for the two different voltage settings of the reflectron. From the two data sets the different times of flight for the same species of fragment ion can be determined. The mass to charge ratio of the parent ion which fragmented to produce the particular species of fragment ion can then be determined from the times of flight of the fragment ions.
    • 公开了一种质谱仪,其包括离子源4,无场或漂移区5以及包括反射镜的离子镜7。 当通过场自由或漂移区域5时通过后源衰变自发分裂的亚稳态亲本离子被布置成当反射器保持在一定电压时进入离子反射镜7并被反射器反射离子检测器8。 然后重复该过程,其中反射器保持在稍低的电压。 对于反射镜的两个不同的电压设置,获得两组相关的飞行时间或质谱数据。 从两个数据集可以确定相同种类的碎片离子的不同飞行时间。 然后可以从片段离子的飞行时间确定碎片化以产生特定种类的碎片离子的母体离子的质荷比。
    • 9. 发明授权
    • Mass spectrometer
    • 质谱仪
    • US06770872B2
    • 2004-08-03
    • US10301580
    • 2002-11-22
    • Robert Harold BatemanJeff BrownAnthony James Gilbert
    • Robert Harold BatemanJeff BrownAnthony James Gilbert
    • H01J4934
    • H01J49/004H01J49/401H01J49/42
    • A mass spectrometer is disclosed comprising a mass selective ion trap such as a 3D quadrupole field ion trap upstream of a pusher electrode of an orthogonal acceleration Time of Flight mass analyser. According to a first embodiment bunches of ions are released from the ion trap and the pusher electrode is energized after a delay time which is progressively varied. According to a second embodiment ions are released from the ion trap in reverse order of mass to charge ratio with the ions having the largest mass to charge ratio being released first. By appropriate release of the ions from the ion trap it is possible to ensure that substantially all of the ions arrive at the pusher electrode at substantially the same time. According to both embodiments it is possible to achieve a duty cycle approaching 100% across a large range of mass to charge ratios.
    • 公开了一种质谱仪,其包括质量选择性离子阱,例如正交加速时间飞行质量分析仪的推进器电极上游的3D四极场离子阱。 根据第一实施例,一束离子从离子阱中释放出来,并且推进器电极在逐渐变化的延迟时间之后通电。 根据第二实施方案,离子从离子阱以与质荷比最大的离子的质荷比相反的顺序被释放。 通过从离子阱适当释放离子,可以确保基本上所有的离子基本上同时到达推动器电极。 根据两个实施例,可以实现在大范围的质荷比之间接近100%的占空比。