Thesis (Ph.D.)--York University, 2005. Graduate Programme in Chemistry. / Typescript. Includes bibliographical references. Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://proquest.umi.com/pqdweb?index=0&did=1163224921&SrchMode=1&sid=7&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1195066319&clientId=5220

Thesis (Ph. D.)--Ohio State University, 2004. / Title from first page of PDF file. Document formatted into pages; contains xii, 146 p.; also includes graphics (some col.) Includes bibliographical references (p. 141-146). Available online via OhioLINK's ETD Center

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Appendix inside back cover. "June 2002" Bibliography: leaves 157-168. Experimental and theoretical studies were carried out on a number of unusual organic molecules of potential astronomical significance. The experimental work was corroborated by various theoretical approaches and by utilising computer-based quantum chemical calculations. Various covalently bound, anionic and neutral oxocarbon species were formed and studied. Additionally, two analogous heterocumulenic systems were investigated. Some isomers of either system, when energised, were shown to undergo gas-phase rearrangement processes.

Appendix inside back cover. / "June 2002" / Bibliography: leaves 157-168. / x, 168, [19] leaves : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Experimental and theoretical studies were carried out on a number of unusual organic molecules of potential astronomical significance. The experimental work was corroborated by various theoretical approaches and by utilising computer-based quantum chemical calculations. Various covalently bound, anionic and neutral oxocarbon species were formed and studied. Additionally, two analogous heterocumulenic systems were investigated. Some isomers of either system, when energised, were shown to undergo gas-phase rearrangement processes. / Thesis (Ph.D.)--University of Adelaide, Dept. of Chemistry, 2002

"February 2003" / Bibliography: leaves 186-201. / viii, 201, ix, [41] leaves : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of Chemistry, 2003

Thesis (Ph. D.)--University of Chicago, Department of Chemistry and Department of Astronomy and Astrophysics, June 2001. / Includes bibliographical references. Also available on the Internet.

Thesis (Ph. D.)--University of Adelaide, Dept. of Chemistry, 2002. / Appendix inside back cover. "June 2002." Includes bibliographical references (leaves 157-168).

More than 40 different molecules have been observed in Interstellar space within the Galaxy. Many of these molecules are seen near hot OB-type stars whose far-ultraviolet emission is intense. Laboratory spectroscopy of such molecules will lead to a better understanding of their astrophysical behaviour, in particular Celestial Masers. This thesis is preoccupied with the spectroscopy of H$_{2}$O, D$_{2}$O, OH, CO, and C$_{2}$H$_{2}$ in the region 1200$\AA$-400$\AA$ and absolute absorption coefficients are derived for CO and C$_{2}$H$_{2}$ using the Thomas-Reiche-Kuhn Sum Rule. A possible Rydberg series of OH was observed, converging to a first ionisation potential of 13.36 eV and a likely inner shell two-electron resonance detected in the ionisation continuum of D$_{2}$O at 415$\AA$. Both a synchrotron and a laser produced plasma continuum source were used for absorption measurements and the advantages of each source were compared. Experiments were undertaken to examine the radiation properties of laser produced plasmas with a view to their general use as far-ultraviolet continuum sources and a computer program was written to predict their net photon emission by Bremsstrahlung processes, with some success. Optoacoustic spectroscopy was considered as a possible technique in the far-ultraviolet with a synchrotron source; its theory was extended to include ionisation and dissociation of molecules. However, optoacoustic experiments attempted were unsuccessful because of insufficient light intensity and excessive background noise near the synchrotron.

Thesis (Ph. D.)--Ohio State University, 2007. / Title from first page of PDF file. Includes bibliographical references (p. 125-129).