Zobrazeno 1 - 7
of 7
pro vyhledávání: '"George E. Yefchak"'
Publikováno v:
International Journal of Mass Spectrometry and Ion Processes. 152:177-184
The resolving power of a Wiley-McLaren time-of-flight mass spectrometer can be severely limited by the longitudinal velocity spread of ions originating from the same position along the flight path. This effect is normally minimized by using an electr
Publikováno v:
International Journal of Mass Spectrometry and Ion Processes. 152:169-176
One of the factors limiting the achievable mass resolution in time-of-flight mass spectrometers is the non-zero extent of the ion spatial distribution along the dimension parallel to the extraction axis. The effects of this spatial distribution are n
Publikováno v:
International Journal of Mass Spectrometry and Ion Processes. 104:83-94
The arrival times and apparent masses of daughter ions formed along the ion path of an electrostatic mirror time-of-flight mass spectrometer were calculated. A distinct metastable peak results from fragmentation in the first field-free region. Peak s
Publikováno v:
International Journal of Mass Spectrometry and Ion Processes. 97:87-106
When using mass spectral detection strategies in which wide ranges of m/z values are monitored, it is important for ions of all masses of interest to be in focus during the data collection interval. In conventional time-of-flight mass spectrometry of
Publikováno v:
Journal of the American Society for Mass Spectrometry. 1(6)
The pulsed ion sources used in conventional time-of-flight mass spectrometry (TOFMS) generally do not provide adequate resolving power across the mass range required for applications such as gas chromatography combined with mass spectrometry (GC/MS).
Publikováno v:
International Journal of Mass Spectrometry and Ion Processes. 94:281-291
A complete second-order space-time description of ion movement in a two-stage electric field mirror is derived. The elements of the resulting transfer matrix account for ion coordinates and angles both in the deflection plane and the plane normal to
Publikováno v:
International Journal of Mass Spectrometry and Ion Processes. 87:313-330
Various models for improved resolving power in time-of-flight mass spectrometry have been considered. A model for dynamic post-source acceleration has been developed in an attempt to achieve mass-independent space and energy focusing. The model incor