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UBC Theses and Dissertations

Electronic spectroscopy by electron impact Tam, Wing-cheung


The design and construction of a high-resolution, low-energy and variable-angle electron impact spectrometer has enabled the study of the interaction between a low energy monochromatic electron beam and a series of atoms and molecules. Optically forbidden transitions have been studied for argon and neon. The Rydberg transitions in atoms and small molecules have also been investigated. The "vacuum ultraviolet spectra" (electron impact spectra) obtained for some organic molecules such as the alkyl derivatives of water and carbonyl compounds have been interpreted in terms of Rydberg transitions. Substituent effects on Rydberg orbital energies and ionization potentials are discussed using Taft σ* values.

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