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Title: Development of TOFMS and GC/TOFMS instrumentation, with fundamental studies using Translational Energy Spectrometry
Author: Kennedy, M. A.
Awarding Body: University of Wales Swansea
Current Institution: Swansea University
Date of Award: 2001
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This thesis describes the design, development and testing of two orthogonal acceleration, Time-Of-Flight (oaTOF) mass spectrometers, constructed at Swansea University during the period 1997-2000. The fundamental principles and concepts necessary for the construction of the various forms of the oaTOF instruments (i.e. linear and reflectron) have been incorporated into the relevant sections, with full explanations as to how the systems were developed. This thesis also includes an investigation using the SIMION 7 ion optics program, to evaluate the performance of the two-stage, orthogonal acceleration source, used within the TOF I instrument. The investigation examines the main areas of resolution and sensitivity, due to the current on-source design and evaluates two enhanced oa-source designs. The final investigation to be described within this thesis pertains to an investigation conducted with a high-resolutional translational energy spectrometer. The spectrometer was used to assess the viability of Translational Energy Spectroscopy (TES), as a means to distinguish between structural isomers. To this end, it was found that the TES technique could be used, to distinguish between the structurally dissimilar isomers of acetone and with the aid of several optically forbidden transitions, as discussed in Section 4.5, distinguish between the structurally similar isomers of xylene.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available