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公开(公告)号：US4081222A
公开(公告)日：1978-03-28
申请号：US664002
申请日：1976-03-04
摘要： In a vacuum system a baffle-valve acts first as a baffle to reduce the backstreaming of a diffusion pump fluid into the main vacuum chamber being evacuated and secondly it can be used as a valve to provide complete isolation between the diffusion pump and the vacuum chamber. This enables the chamber to be open for service work while the diffusion pump is kept operating for rapid pump down. The foregoing dual use of the baffle/valve increases pumping efficiency because of higher conductance.
摘要翻译： 在真空系统中，挡板阀首先作为挡板起作用，以减少扩散泵流体进入被抽真空的主真空室的回流，其次，它可以用作阀，以在扩散泵和真空室之间提供完全隔离 。 这使得腔室能够在扩散泵保持运行以便快速泵送时打开以进行维修工作。 上述双重用途的挡板/阀门由于较高的电导性而提高了泵送效率。
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2.发明授权Focusing ion lens system for mass spectrometer for separating charged and neutral particles 失效用于分离充电和中性粒子的大量光谱仪的聚焦离子透镜系统
公开(公告)号：US4075479A
公开(公告)日：1978-02-21
申请号：US664047
申请日：1976-03-04
CPC分类号： H01J49/10
摘要： In a mass spectrometer a focusing ion lens system effectively separates charged from neutral particles by forming a potential well along the axis from the ionizing region to the mass analyzer by the use of a gridded lens system. The grids by the use of a high-low voltage combination form the potential well while at the same time allowing nonselected neutral particles to pass through the grid. Thus, the system is very effective for relatively high pressure ionizing regions where a large amount of neutral particles are generated.
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3.发明授权Mass spectrometer system and method for control of ion energy for different masses 失效质谱仪系统及控制不同质量离子能量的方法
公开(公告)号：US4214160A
公开(公告)日：1980-07-22
申请号：US664046
申请日：1976-03-04
CPC分类号： H01J49/4215
摘要： Apparatus and method for programming the ion energy of ions being analyzed by a quadruple mass spectrometer where the axis potential applied to the quadruple rods is caused to vary in synchronism with a mass scan in order that the ions of each mass being analyzed may transit the quadruple with the most advantageous energy for proper analysis (that is, with substantially equal velocities) and the application of the ion scan voltage will not distort the fringing field at the entrance to the quadrupole.
摘要翻译： 用于对通过四重质谱仪进行分析的离子的离子能量进行编程的装置和方法，其中施加到四极杆上的轴电位与质量扫描同步地变化，以使得被分析的每个质量的离子可以转运四倍 具有用于适当分析的最有利的能量（即，具有基本相等的速度），并且离子扫描电压的施加不会扭曲四极入口处的边缘场。
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公开(公告)号：US4032782A
公开(公告)日：1977-06-28
申请号：US692846
申请日：1976-06-04
CPC分类号： H01J49/4215 , H01J49/4255
摘要： A method of selecting a material for the construction of a multipole mass filter that is temperature stable or in other words, the R.sub.o parameter remains invariant with change in temperature. The coefficients of thermal expansion of the quadrupole rods and mounting structure are chosen so that a constant ratio of the two is provided which in turn is determined by the geometrical construction of the filter.
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5.发明授权Quadrupole ion trap mass spectrometer having two axial modulation excitation input frequencies and method of parent and neural loss scanning 失效具有两个轴向调制激励输入频率和母体和神经损耗扫描方法的四极离子阱质谱仪
公开(公告)号：US5352890A
公开(公告)日：1994-10-04
申请号：US990690
申请日：1992-12-14
CPC分类号： H01J49/424 , H01J49/0063 , H01J49/0081 , H01J49/427
摘要： There is described a method of operating an ion trap mass spectrometer. The method is carried out by trapping ions of selected masses in a three-dimensional field and then generating at least two fields in said trap having different frequencies to excite multiple trapped ions.
摘要翻译： 描述了操作离子阱质谱仪的方法。 该方法通过在三维场捕获所选质量的离子，然后在所述陷阱中产生具有不同频率的至少两个场来激发多个捕获的离子来进行。
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6.发明授权Quadrupole ion trap mass spectrometer having two pulsed axial excitation input frequencies and method of parent and neutral loss scanning and selected reaction monitoring 失效具有两个脉冲轴向激发输入频率的四极离子阱质谱仪和母体和中性丢失扫描方法以及选择的反应监测
公开(公告)号：US5075547A
公开(公告)日：1991-12-24
申请号：US645574
申请日：1991-01-25
IPC分类号： H01J49/42
CPC分类号： H01J49/424 , H01J49/0063 , H01J49/0081
摘要： This invention relates generally to a quadrupole ion trap mass spectrometer and method of operation and more particularly to an ion trap mass spectrometer in which pulses of energy of predetermined frequencies are applied across the end caps to independently and sequentially excite ions of different masses trapped in the ion trap to perform parent scanning, neutral loss scanning and selected reaction monitoring.
摘要翻译： 本发明一般涉及一种四极离子阱质谱仪及其操作方法，更具体地说，涉及一种离子阱质谱仪，其中预定频率的能量脉冲施加在端帽上以独立且顺序地激发捕获在不同质量的不同质量的离子 离子阱进行父扫描，中性损失扫描和选择反应监测。
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公开(公告)号：US4816675A
公开(公告)日：1989-03-28
申请号：US119224
申请日：1987-11-04
申请人： William J. Fies , Michael S. Story
发明人： William J. Fies , Michael S. Story
CPC分类号： H01J49/4215 , H01J49/0095
摘要： An unbalanced radio frequency voltage is supplied between two pairs of conductive rods of a quadrupole mass filter of a mass spectrometer system. Means are provided for d.c. voltage polarity reversal for monitoring positive and negative ions. The d.c. voltage is derived by rectification of the radio frequency voltage.
摘要翻译： 在质谱仪系统的四极质量过滤器的两对导电棒之间提供不平衡的射频电压。 提供手段 用于监测正负离子的电压极性反转。 直径 电压通过射频电压的整流得到。
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8.发明授权Quadrupole ion trap mass spectrometer having two axial modulation excitation input frequencies and method of parent and neutral loss scanning 失效具有两个轴向调制激励输入频率和母体和中性损耗扫描方法的四极离子阱质谱仪
公开(公告)号：US5171991A
公开(公告)日：1992-12-15
申请号：US645622
申请日：1991-01-25
IPC分类号： H01J49/42
CPC分类号： H01J49/424 , H01J49/0063 , H01J49/0081 , H01J49/427
摘要： Disclosed is quadrupole ion trap mass spectrometer of the type including a ring electrode and end caps defining a trap volume and including means for introducing sample ion into the ion trap and means for applying voltages to the electrodes. Further included are means for applying two resonant excitation waveforms at two different frequencies and two different voltages between the end cap electrodes to simultaneously excite multiple ions in the ion trap volume.
摘要翻译： 公开了四极离子阱质谱仪，其包括限定陷阱体积的环形电极和端盖，并且包括用于将样品离子引入离子阱的装置和用于向电极施加电压的装置。 还包括用于在端帽电极之间以两个不同频率和两个不同电压施加两个谐振激励波形的装置，以同时激发离子阱体积中的多个离子。
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公开(公告)号：US4536652A
公开(公告)日：1985-08-20
申请号：US542117
申请日：1983-10-14
IPC分类号： H01J49/26
CPC分类号： H01J49/26 , H01J49/004
摘要： In a hybrid mass spectrometer, a high-energy collision chamber (8) is arranged in a field-free region (12) which, in the direction of travel of the ions, is located after the first stage (1 to 6). A lens arrangement (9) serves for decelerating daughter ions of different energies to a fixed energy, and preferably at the same time also for shaping the ion beam. Preferably, the hybrid mass spectrometer is of BEQQ configuration.
摘要翻译： 在混合质谱仪中，高能量碰撞室（8）设置在无离子区域（12）中，其在离子的行进方向位于第一级（1至6）之后。 透镜装置（9）用于将不同能量的子离子减速至固定能量，优选同时用于使离子束成形。 优选地，混合质谱仪是BEQQ构型。
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