M.S. (Master of Science)
Department of Chemistry
Afterglow (Physics); Ion bombardment
This thesis documents the design and testing of a novel flowing afterglow guided ion beam instrument and also presents results of its applications to thermochemistry. The design of the instrument was influenced by past similar instrumentation and by past studies of the diagnostics of flow tube techniques. The electronic and mechanical components of the instrument are described in detail. The main capabilities of this instrument are measurement of reaction rate coefficients and of bond energies by collision induced dissociation experiments. The instrument was tested for its accuracy in these measurements with systems of well known reaction rate coefficients and thresholds. Those results are presented. After calibration, this instrument was used to measure the bond energies of polyether-metal cation complexes and the gas phase basicity of sulfuric acid. Binding energies for 1,2-Dimethoxyethane and monovalent and divalent alkaline earth metal cation complexes were studied. Effects of cation size, of the number of binding sites on the ligand, and of the addition of an iodide ligand are discussed. The measurement of the gas phase basicity and consequently the proton affinity of sulfuric acid are also examined.
Do, Khanh Dung T., "Construction and testing of a flowing afterglow guided ion beam instrument : applications to thermochemistry" (1996). Graduate Research Theses & Dissertations. 1934.
Northern Illinois University
Rights Statement 2
NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.