公开(公告)号：US4755670A

公开(公告)日：1988-07-05

申请号：US914016

申请日：1986-10-01

申请人： John E. P. Syka ,  William J. Fies, Jr.

发明人： John E. P. Syka ,  William J. Fies, Jr.

IPC分类号： G01N27/62 ,  H01J49/06 ,  H01J49/42 ,  H01J49/34

CPC分类号： H01J49/427 ,  H01J49/027

摘要： A quadrupole mass spectrometer in which a sample to be analyzed is ionized in a two or three dimensional electrostatic trapping field, and the ions in the range of the mass-to-charge ratios to be analyzed are excited at their characteristic frequencies of motion. The excited ions generate image currents which are detected and processed to provide a mass spectrum.

摘要翻译： 将要分析的样品在二维或三维静电捕获场中电离的四极质谱仪，并且将要分析的质荷比范围内的离子在其特征运动频率下被激发。 激发的离子产生被检测和处理以提供质谱的图像电流。

公开(公告)号：US4032782A

公开(公告)日：1977-06-28

申请号：US692846

申请日：1976-06-04

申请人： Ronald D. Smith ,  William J. Fies ,  John R. Reeher ,  Michael S. Story

发明人： Ronald D. Smith ,  William J. Fies ,  John R. Reeher ,  Michael S. Story

IPC分类号： G01N27/62 ,  H01J49/42 ,  H01J39/34

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.

公开(公告)号：US4650999A

公开(公告)日：1987-03-17

申请号：US663314

申请日：1984-10-22

申请人： William J. Fies, Jr. ,  Paul E. Kelley ,  Walter E. Reynolds ,  George C. Stafford, Jr. ,  John E. P. Syka

发明人： William J. Fies, Jr. ,  Paul E. Kelley ,  Walter E. Reynolds ,  George C. Stafford, Jr. ,  John E. P. Syka

IPC分类号： G01N27/62 ,  H01J49/04 ,  H01J49/10 ,  H01J49/42 ,  B01D59/44

CPC分类号： H01J49/424 ,  H01J49/427

摘要： The method of operating a quadrupole ion trap in which the mass range of interest is analyzed in segments by trapping ions of successive mass ranges within the segments whereby the operating parameters for each segment may be selected to improve sensitivity and resolution.

摘要翻译： 操作四极离子阱的方法，其中通过捕获段内连续质量范围的离子来分段感兴趣的质量范围，由此可以选择每个段的操作参数以提高灵敏度和分辨率。

公开(公告)号：US5756996A

公开(公告)日：1998-05-26

申请号：US675966

申请日：1996-07-05

申请人： Mark E. Bier ,  John E. P. Syka ,  Dennis M. Taylor ,  William J. Fies

发明人： Mark E. Bier ,  John E. P. Syka ,  Dennis M. Taylor ,  William J. Fies

IPC分类号： H01J49/04 ,  H01J49/14 ,  H01J49/42

CPC分类号： H01J49/147 ,  H01J49/145

摘要： An external ion source assembly in which ion are formed in an ion volume by the interaction of energetic electrons and gas molecules. The effective energy of the electrons entering the ion volume is controlled by changing the voltage between the electron source (filament) and the ionization volume whereby ions having sufficient energy for ionizing atoms and molecules leave the electron source and enter the ionization volume only during an ionization period. The ion source assembly can be used both for electron impact ionization (EI) and for chemical ionization (CI).

摘要翻译： 外部离子源组件，其中通过能量电子和气体分子的相互作用在离子体中形成离子。 通过改变电子源（细丝）和离子化体积之间的电压来控制进入离子体积的电子的有效能量，由此离子具有足够的电离原子和分子的能量离开电子源并且仅在电离过程中进入离子化体积 期。 离子源组件可用于电子碰撞电离（EI）和化学电离（CI）。

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

IPC分类号： H01J49/42 ,  B01D59/44

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。

公开(公告)号：US4214160A

公开(公告)日：1980-07-22

申请号：US664046

申请日：1976-03-04

申请人： William J. Fies ,  Ronald D. Smith ,  John R. Reeher ,  Michael S. Story

发明人： William J. Fies ,  Ronald D. Smith ,  John R. Reeher ,  Michael S. Story

IPC分类号： H01J49/42 ,  H01J39/34

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。