Journal ArticleDOI
Energy Resolution of the Conventional Time‐of‐Flight Mass Spectrometer
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TLDR
In this article, the authors compared the resolutions of time-of-flight (TOF) mass spectrometers with respect to their ability to compensate for initial ion velocities while operating in the space focusing mode.Abstract:
The resolutions of time‐of‐flight (TOF) mass spectrometers using multiple acceleration are compared with respect to their ability to compensate for initial ion velocities while operating in the space focusing mode. A theorem is proved which demonstrates that the Wiley‐McLaren two‐step TOF has the theoretical limit for energy resolution of a large class of spectrometers and has the practical limit for all other conventional TOF's which employ time independent fields. An alternate explanation is given for the increased resolution obtained by Studier.read more
Citations
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Journal ArticleDOI
Orthogonal‐acceleration time‐of‐flight mass spectrometer
J. H. J. Dawson,Michael Guilhaus +1 more
TL;DR: The principles and applications of time-of-flight mass spectrometry involving instruments with independent (orthogonal) axes for ion generation and mass analysis are reviewed and the applications of commercial and customized instruments are discussed for several ionization methods.
Journal ArticleDOI
Special feature: Tutorial. Principles and instrumentation in time‐of‐flight mass spectrometry. Physical and instrumental concepts
TL;DR: The principles of time-of-flight mass spectrometry (TOFMS) are described with a view to understanding the strengths and weaknesses of this method of mass analysis in the context of current applications.
Patent
Time-of-flight mass spectrometer
Gangqiang Li,Gary M. Hieftje +1 more
TL;DR: In this article, a time-of-flight mass spectrometer for qualitative and quantitative analysis of elemental, molecular, and isotopic chemical samples is provided which offers increased sensitivity, speed of analysis, resolving power, and signal-to-noise ratios than prior mass spectrameters by properly sampling and collimating an ion beam from a continuous ion source.
Journal ArticleDOI
Resolution in the linear time-of-flight mass spectrometer
Patent
Combination of time resolution and mass dispersive techniques in mass spectrometry
TL;DR: In this paper, a time-resolved mass spectrometer was combined with chromatography apparatus to obtain multidimensional MS/MS-type data during the relatively short duration of a single chromatographic peak.
References
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Journal ArticleDOI
Time-of-flight mass spectrometer with improved resolution
W. C. Wiley,I. H. McLaren +1 more
TL;DR: In this paper, a new type of ion gun is described which greatly improves the resolution of a nonmagnetic time-of-flight mass spectrometer, and the focusing action of this gun is discussed and analyzed mathematically.
Journal ArticleDOI
Continuous ion source for a time-of-flight mass spectrometer
TL;DR: In this paper, an improved performance of continuous ion sources in a time-of-flight mass spectrometer has been obtained with simple modifications, and the system was developed for use with heated filament surface ionization sources, but the advantages of its use with an electron bombardment source seem more significant.