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    • 31. 发明申请
    • TIME-OF-FLIGHT MASS SPECTROMETER WITH SPATIAL FOCUSING OF A BROAD MASS RANGE
    • 时空飞行质谱仪,具有宽阔的大范围空间聚焦
    • US20160111271A1
    • 2016-04-21
    • US14883127
    • 2015-10-14
    • Bruker Daltonik GmbH
    • Sebastian BÖHM
    • H01J49/16H01J49/40
    • H01J49/164H01J49/067H01J49/403
    • The invention relates to time-of-flight mass spectrometers which operate with pulsed ionization of superficially adsorbed analyte substances and with an improvement in the mass resolution by means of a time-delayed start of the ion acceleration; in particular with ion-accelerating voltages which change over time after a delayed start in order to obtain a constant mass resolution over broad mass ranges. Since the varying acceleration produces a broadening of the ion beam at right angles to the direction of flight, and this broadening increases with the ion mass, the invention proposes to compensate, to the desired extent, for the broadening of the ion beam with the aid of an additional ion-optical lens whose voltage is also varied over time. The invention also relates to measurement methods therefor.
    • 本发明涉及通过表面吸附的分析物质的脉冲电离操作并通过离子加速的时间延迟启动来提高质量分辨率的飞行时间质谱仪; 特别是在延迟启动之后随时间变化的离子加速电压,以便在宽质量范围内获得恒定的质量分辨率。 由于变化的加速度导致与飞行方向成直角的离子束的加宽,并且该拓宽随着离子质量的增加而增加,本发明提出了在所需的程度上补偿离子束的扩大,借助于 的附加离子光学透镜,其电压也随时间变化。 本发明还涉及其测量方法。
    • 32. 发明授权
    • Mass spectrometers comprising accelerator devices
    • 包括加速器装置的质谱仪
    • US09318309B2
    • 2016-04-19
    • US14355884
    • 2012-11-05
    • Micromass UK Limited
    • Jeffery Mark BrownMartin Raymond GreenDavid J. Langridge
    • H01J49/40H01J49/06
    • H01J49/403H01J49/0031H01J49/06H01J49/40
    • A method of mass spectrometry is disclosed comprising providing a flight region for ions to travel through and a detector or fragmentation device. A potential profile is maintained along the flight region such that ions travel towards the detector or fragmentation device. The potential at which a first length of the flight region is maintained is then changed from a first potential to a second potential while at least some ions are travelling within the first length of flight region. The changed potential provides a first potential difference at an exit of the length of flight region, through which the ions are accelerated as they leave the length of flight region. This increases the kinetic energy of the ions prior to them reaching the detector or fragmentation cell.
    • 公开了一种质谱方法,其包括提供用于离子行进的飞行区域和检测器或碎裂装置。 沿着飞行区域保持电位分布,使得离子朝向检测器或碎裂装置行进。 然后,维持飞行区域的第一长度的电位然后从第一电位改变到第二电位,而至少一些离子在第一飞行区域内行进。 变化的电位在飞行区域的长度的出口处提供第一潜在差异,离子在离开飞行区域的长度时被加速。 这增加了离子在它们到达检测器或破碎电池之前的动能。
    • 35. 发明授权
    • Time-of-flight mass spectrometer
    • 飞行时间质谱仪
    • US08772708B2
    • 2014-07-08
    • US13996372
    • 2011-12-20
    • Tohru KinugawaOsamu Furuhashi
    • Tohru KinugawaOsamu Furuhashi
    • H01J49/00
    • H01J49/405G01N27/62H01J49/403
    • An embodiment with a dual-stage reflectron is as follows: (1) On the assumption that a reflector has a base potential XA(U) created by uniform electric fields, its design parameters are adjusted so as to cancel the first and second order derivatives at energy E=E0 of a total time of flight T(E), and a second-order focusing position on a central axis at which the potential value becomes zero is determined (Mamyrin solution). (2) A correcting potential XC(U) to be superposed on XA(U), beginning from the second-order focusing position, is calculated so that T(E) of ions reflected in a region deeper than the second-order focusing position will be constant. (3) Voltage values of the reflector electrodes are determined so that a real potential XR(U)=XA(U)+XC(U) is created on the central axis.
    • 具有双级反射器的实施例如下:(1)假设反射器具有由均匀电场产生的基极电位XA(U),其设计参数被调整以抵消第一和第二阶导数 在总时间T(E)的能量E = E0和电位值变为零的中心轴上的二次聚焦位置被确定(Mamyrin溶液)。 (2)计算从二次聚焦位置开始叠加在XA(U)上的校正电位XC(U),使得在比二次聚焦位置更深的区域中反射的离子的T(E) 将不变 (3)确定反射器电极的电压值,使得在中心轴上产生实际电位XR(U)= XA(U)+ XC(U))。