公开(公告)号：US20030136903A1

公开(公告)日：2003-07-24

申请号：US10316173

申请日：2002-12-10

申请人： Bruker Daltonik GMBH

发明人： Gerhard Weiss ,  Carsten Stoermer ,  Oliver Rather

IPC分类号： H01J049/40

CPC分类号： H01J49/401

摘要： The invention relates to time-of-flight mass spectrometers, equipped with ion reflector and ion detector, with orthogonal ion injection and outpulsing of a segment of the ion beam perpendicular to the direction of injection in a pulser. The invention is directed to a time-of-flight mass spectrometer in which a reflector and an ion detector each have an angular offset about an axis that is perpendicular to the respective directions of injection and deflection. This allows a large distance to be used between the pulser and detector with the highest possible utilization of ions.

摘要翻译： 本发明涉及配备有离子反射器和离子检测器的飞行时间质谱仪，其具有与脉冲发生器中的注射方向垂直的离子束的正交离子注入和脉冲。 本发明涉及一种飞行时间质谱仪，其中反射器和离子检测器各自具有围绕垂直于各个注射和偏转方向的轴线的角度偏移。 这允许在脉冲发生器和检测器之间使用较大的距离，以最大限度地利用离子。

公开(公告)号：US20030218129A1

公开(公告)日：2003-11-27

申请号：US10366578

申请日：2003-02-13

申请人： Bruker Daltonik GMBH

发明人： Oliver Rather

IPC分类号： H01J049/00 ,  B01D059/44

CPC分类号： H01J49/025 ,  H01J49/40

摘要： The invention covers a method for detecting ions in high resolution time-of-flight mass spectrometers which operate with secondary electron multiplier multichannel plates and in which many single spectra are acquired and added to produce a sum spectrum. The invention involves (a) using an analog digital converter (ADC) for converting electron currents from secondary electron multipliers, instead of a time-to-digital converter (TDC) which was previously used for highest possible signal resolution, (b) performing a separate rapid peak recognition procedure for the ion signals of each spectrum by a fast calculation method, thereby collecting flight time and intensity value pairs for the ion peaks, and (c) constructing a time-of-flight/intensity histogram, which is further processed as a composite time-of-flight spectrum. The invention retains the significantly higher measurement dynamics of an ADC and achieves the improved resolution capability of a TDC, but without showing the latter's known signal distortion due to dead times.

摘要翻译： 本发明涉及用二次电子倍增器多通道板操作的高分辨率飞行时间质谱仪中的离子检测方法，其中获得并添加许多单个光谱以产生和光谱。 本发明涉及（a）使用用于转换来自二次电子倍增器的电子电流的模拟数字转换器（ADC）而不是先前用于最高可能信号分辨率的时间 - 数字转换器（TDC），（b）执行 通过快速计算方法对每个光谱的离子信号进行单独的快速峰识别程序，从而收集离子峰的飞行时间和强度值对，（c）构建飞行时间/强度直方图，进一步处理 作为复合飞行时间谱。 本发明保留了ADC的显着更高的测量动态，并且实现了TDC的改进的分辨率能力，但是没有显示后者由于死时间而已知的信号失真。

公开(公告)号：US20030168590A1

公开(公告)日：2003-09-11

申请号：US10303661

申请日：2002-11-25

申请人： Bruker Daltonik GMBH

发明人： Gerhard Weiss ,  Carsten Stoermer ,  Oliver Rather

IPC分类号： H01J049/40 ,  B01D059/44

CPC分类号： H01J49/401 ,  H01J49/06

摘要： The invention relates to the construction and operation of a slit diaphragm pulser for a time-of-flight mass spectrometer with orthogonal injection of the ions to be examined. The invention includes switching three diaphragm potentials during a transition from a filling phase to an acceleration phase in order to maintain a potential along the axis of the injected ion beam at a constant level, to prevent any penetration by the accelerating fields during the filling phase and to obtain extremely high mass resolution in the acceleration phase through a lens effect.

摘要翻译： 本发明涉及正交注射待检离子的飞行时间质谱仪的狭缝隔膜脉冲发生器的结构和操作。 本发明包括在从填充阶段到加速阶段的过渡期间切换三个隔膜电位，以便沿着注入的离子束的轴线保持恒定水平的电位，以防止在填充阶段期间加速场的任何穿透;以及 通过透镜效应在加速阶段获得极高的质量分辨率。