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Single- and multi-photon ionization studies of organosulfur species

by Yu-San Cheung

Institution:	Iowa State University
Department:
Degree:
Year:	1999
Keywords:	Chemistry; Physical chemistry; Organic Chemistry; Physical Chemistry
Posted:
Record ID:	1701437
Full text PDF:	http://lib.dr.iastate.edu/rtd/12558 http://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=13557&context=rtd

Abstract

Single- and multi-photon ionization techniques were employed for the photoionization and pulsed field ionization (PFI) studies for the following organsulfur species: CH3SH, CH3CH2SH, CH 3CH2S and CS2. Accurate ionization energies were determined for these neutral species using high-resolution lasers and PFI scheme. The uncertainty in the ionization energy is a few wavenumbers. In these studies, the resolution of the PFI spectra by single vacuum ultraviolet photon ionization was higher than that by multi-photon ionization. Information of the energy levels for the neutrals and/or the corresponding cations was retrieved from the experimental results.