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公开(公告)号：EP1479093A4
公开(公告)日：2007-10-24
申请号：EP03743172
申请日：2003-02-20
发明人： VOSS GUENTER F
CPC分类号： H01J49/328
摘要： A circular cycloidal mass spectrometer, Fig. 5, has an outer electrode (74) of generally circular configuration and an inner electrode (70) having generally circular outer periphery with an annulus (76) for the flow of ions (90) defined therebetween. The electrodes (70, 74) are structured to create an electric field therebetween. A magnetic field generator is structured to create a magnetic field oriented generally perpendicular to said electric field. An ion beam source (80) for injecting ions (82) into the annulus (76) for travel therearound is provided, and an ion exit (100) for discharge of the ions traveling in said annulus is provided with an ion collector (102) being disposed adjacent to the ion exit (100). The circular cycloidal mass spectrometer may be structured to provide, under the influence of the electric field and magnetic field, a path of travel (90, 92, 94, 96) for the ion beams, which is similar to either epicycloidal or hypocycloidal curves. If desired, elliptical shapes or other suitable shapes providing a nonlinear path of ion travel may be employed. A filter may be interposed between said outer electrode and said inner electrode.
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公开(公告)号：EP1817718A2
公开(公告)日：2007-08-15
申请号：EP05852176.6
申请日：2005-11-23
申请人： THERMO FINNIGAN LLC
发明人： LANGE, Oliver , SENKO, Michael, W.
CPC分类号： H01J49/38 , G06K9/00523 , H01J49/0036
摘要： A method of processing Fourier Transform Mass Spectrometry (FTMS) data comprises carrying out a Fourier Transform of a part of a time domain transient and identifying from that transformed data signal peaks representative of the presence of ions. Once the peaks have been identified, the full transient is then transformed, and the peaks identified in the partial transient transform are used to locate true peaks in the transformed full transient. The number of 'false' peaks resulting from random noise has been found to correlate to the resolution, so that using a partial transient to identify true peaks reduces the risk of false peaks being included; nevertheless this information can then be applied to the full data set when transformed. As an alternative, different parts of the full data set can be transformed and then correlated; because any noise will be random, false peaks should occur at different places in the two partial transforms.
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公开(公告)号：EP1129468B1
公开(公告)日：2005-01-12
申请号：EP99951507.5
申请日：1999-10-13
CPC分类号： H01J49/38 , H01J41/12 , H01J49/0495
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公开(公告)号：EP1121709A1
公开(公告)日：2001-08-08
申请号：EP99951513.3
申请日：1999-10-13
CPC分类号： H01J49/147 , H01J49/022 , H01J49/38
摘要： A quantity of electrons that will be used in the ionization event in an FTICR MS is preprogrammed. When the number of electrons produced reaches that number, the electron beam is turned off. This approach assures that the same number of electrons are used for every measurement and eliminates the variations due to fundamental characteristics of the electron source and the variations in temperature due to changing ambient conditions.
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公开(公告)号：EP0553789B1
公开(公告)日：1998-08-26
申请号：EP93101205.8
申请日：1993-01-27
申请人： NIKKISO CO., LTD.
发明人： Nakagawa, Kazuo, c/o Nikkiso Co., Ltd. , Iritani, Yuichi, c/o Nikkiso Co., Ltd. , Yamazaki, Hiromi, c/o Nikkiso Co., Ltd. , Takakuwa, Yasushi, c/o Nikkiso Co., Ltd.
CPC分类号： A61B5/7257 , A61B5/097 , H01J49/38
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公开(公告)号：EP0616550A4
公开(公告)日：1996-04-10
申请号：EP93900874
申请日：1992-12-07
CPC分类号： H01J49/005 , H01J49/0481
摘要： A universal collisional activation ion trap comprises an ion trapping means containing a bath gas and having connected thereto a noise signal generator (4). A method of operating a universal collisional activation ion trap comprises the steps of: providing an ion trapping means (1-3); introducing into the ion trapping means a bath gas; and generating a noise signal within the ion trapping means; introducing into the ion trapping means a substance that, when acted upon by the noise signal, undergoes collisional activation to form product ions.
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37.发明公开Method and apparatus for providing tailored exitation as in Fourier transform mass spectrometry 失效通过傅里叶变换的装置，用于质谱选择性的激励方法和装置。
公开(公告)号：EP0575778A1
公开(公告)日：1993-12-29
申请号：EP93108701.9
申请日：1993-05-28
发明人： Liang, Zhenmin
CPC分类号： H01J49/38 , B01D59/44 , H01J49/424 , H01J49/427
摘要： Tailored excitation of ions in a mass spectrometer is obtained by using an excitation signal which comprises at least one signal having the form of a sinc function modulated sine wave. The sinc modulated sine wave has a magnitude function in the frequency domain in the form of a rectangular function centered at the frequency of the sine wave and having a width determined by the width of the sinc function. Plural sinc modulated sine wave signals can be applied to the ion trap of the spectrometer, with the various signals having different sine wave frequencies, to provide a tailored excitation spectrum without the need for extended computation.
摘要翻译： 在质谱仪中的离子的定制激励是通过使用在其包括具有调制正弦波sinc函数的形式的至少一个信号激励信号而获得的。 调制正弦波正弦具有在该正弦波的频率为中心的矩形函数的形式的频域的大小的功能和具有宽度确定性由sinc函数的宽度开采。 复数正弦调制的正弦波信号可以被施加到光谱仪的离子阱，与具有不同频率的正弦波的各种信号，而不需要延长的计算，以提供定制的激发光谱。
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38.发明公开METHOD AND APPARATUS FOR PRODUCING AN ARBITRARY EXCITATION SPECTRUM FOR FOURIER TRANSFORM MASS SPECTROMETRY 失效用于生产用于FOURIER变换质谱的仲裁激励光谱的方法和装置
公开(公告)号：EP0425658A4
公开(公告)日：1992-06-24
申请号：EP90908973
申请日：1990-05-17
申请人： EXTREL FTMS, INC.
发明人： GOODMAN, SETH , HANNA, ALAN
CPC分类号： H01J49/38 , Y10T436/24
摘要： The phase-scrambled frequency spectrum (181) is inverse Fourier transformed (182) to produce the final time domain waveform (183) which is used to generate the electric field (177) which excites the ions in an ion cyclotron resonance cell (101). In the iterative method of the invention, the desired frequency spectrum (181) is phase scrambled such that all frequencies are not in phase in any point in time, an inverse Fourier transform (182) is performed on the phase scrambled frequency spectrum (181) and the result multipled by a window function (185). The time domain waveform (183) is forward Fourier transformed (187) to produce an output spectrum which is compared to a reference spectrum (188) to provide correction factors which are used to predistort the magnitude of the final frequency spectrum (189) the steps are repeated until the output frequency spectrum (187) is sufficiently close to the reference spectrum (188) whereafter the time domain waveform (183) corresponding to that output frequency spectrum (187) is applied as the excitation signal.
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公开(公告)号：EP0211012B1
公开(公告)日：1992-03-11
申请号：EP86900690.8
申请日：1985-12-16
申请人： EXTREL FTMS, INC.
发明人： SPENCER, Robert, B.
CPC分类号： H01J49/38
摘要： Gaseous ions trapped within an analyzer cell (10) of an ion cyclotron resonance mass spectrometer are excited into resonance by a swept radio-frequency electric field having an envelope of trapezoidal shape. The envelope includes an onset region which ramps linearly from a zero level to a non-zero constant-amplitude level, a constant-amplitude region having the non-zero constant-amplitude level, and a termination region which ramps linearly from the constant-amplitude level to the zero level. The field has a generally constant-amplitude power spectrum and imparts relatively uniform energy to ions having natural cyclotron frequencies of interest.
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40.发明公开Linear prediction ion cyclotron resonance spectrometry apparatus and method 失效Verfahren und Vorrichtung zur Ionenzyklotronresonanzspektrometrie mitLinearprädiktion。
公开(公告)号：EP0437085A2
公开(公告)日：1991-07-17
申请号：EP90314153.9
申请日：1990-12-21
IPC分类号： H01J49/38
摘要： A gaseous sample for mass spectroscopy analysis is introduced into an ion resonance cell (16) within an evacuated chamber (12). An electron beam (32) is passed through the cell to ionize the gas. A magnetic field (B) is applied along a first direction within the cell and a static electric field is applied along a second direction orthogonal to the first direction. The combined action of the magnetic and static electric fields confine the ions and cause them to orbit. An alternating electric field is created within the cell to excite ions having mass-to-charge ratios within a predetermined range. A time domain signal produced by the excited ions is detected and digitized. The digital samples of the time domain electrical signal are transformed into frequency domain data by linear prediction using a linear least-squares procedure. The resultant frequency domain data contains information about the mass of the different types of ions present in the cell and the relative number of each type.
摘要翻译： 将用于质谱分析的气体样品引入真空室（12）内的离子共振池（16）中。 电子束（32）通过电池以电离气体。 沿着单元内的第一方向施加磁场（B），沿着与第一方向正交的第二方向施加静电场。 磁场和静态电场的组合作用限制了离子并使它们进入轨道。 在电池内产生交变电场，以激发质量与电荷比在预定范围内的离子。 由激发的离子产生的时域信号被检测和数字化。 时域电信号的数字样本通过线性最小二乘法的线性预测转换为频域数据。 所得到的频域数据包含关于存在于单元中的不同类型的离子的质量和每种类型的相对数量的信息。
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