{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/70184"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/70184","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Laser-Induced Fluorescence Studies of Molecular Dynamics","abstract":"The vibronic rovibronic fluoresence excitation spectra of biacetyl, methylglyoxal, and pentanedione have been recorded for the excited singlet state of each molecule. In particular, the fluorescence of biacetyl in a molecular beam has been shown to exhibit the quantum beat effect in the time-resolved fluoresence. By the use of a simple, perturbation theory-derived analysis and also a more complicated, simulation-based method, the effective densities of the triplet states involved in the beat phenomena and the mean interaction energies for singlet-triplet state coupling have been determined.","abstract_html":"The vibronic rovibronic fluoresence excitation spectra of biacetyl, methylglyoxal, and pentanedione have been recorded for the excited singlet state of each molecule. In particular, the fluorescence of biacetyl in a molecular beam has been shown to exhibit the quantum beat effect in the time-resolved fluoresence. By the use of a simple, perturbation theory-derived analysis and also a more complicated, simulation-based method, the effective densities of the triplet states involved in the beat phenomena and the mean interaction energies for singlet-triplet state coupling have been determined.","abstract_has_math":false,"creators":["Gurnick, Michael Joseph"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Chemistry","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-12-15T23:17:38Z","date_published":"2014-12-15T23:17:38Z","updated_at":"2026-07-22T22:26:02Z","subjects":["Chemistry, Physical"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI8209583"],"render_values":[{"text":"(UMI)AAI8209583","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/70184","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Gurnick, Michael Joseph"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2014-12-15T23:17:38Z","10000-01-01","1982"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemistry"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Chemistry, Physical"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/70184","(UMI)AAI8209583"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The vibronic rovibronic fluoresence excitation spectra of biacetyl, methylglyoxal, and pentanedione have been recorded for the excited singlet state of each molecule. In particular, the fluorescence of biacetyl in a molecular beam has been shown to exhibit the quantum beat effect in the time-resolved fluoresence. By the use of a simple, perturbation theory-derived analysis and also a more complicated, simulation-based method, the effective densities of the triplet states involved in the beat phenomena and the mean interaction energies for singlet-triplet state coupling have been determined.","The dissociation of ClCn and cyanogen at 193 nm by the use of an ArF laser has been investigated. The nascent rovibronic energy distributions were obtained by a simple laser-induced fluoresence method, and the angular and velocity distributions of the recoiling photofragments determined by the use of a unique, multichannel photomultiplier array for each individual internal energy state. The internal energy distributions show cold vibrational state distributions and hot rotational state distributions, while the translational energy distributions are very hot. The preliminary data for the angular distributions indicate an isotropic profile, which is the expected result for a predissociating molecule. Extensive details on the construction of the photomultiplier array are included, along with the necessary computer programs and electronics for the experiments.","Made available in DSpace on 2014-12-15T23:17:38Z (GMT). No. of bitstreams: 1 8209583.pdf: 4731441 bytes, checksum: 0563eb1c8b90d3ca68e5f3983cb1be21 (MD5) Previous issue date: 1982","Embargo set by: Seth Robbins for item 70350 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","233 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1982."]},{"key":"dc:title","label":"Title","values":["Laser-Induced Fluorescence Studies of Molecular Dynamics"]}]}],"canonical_facts":{"dc:creator":["Gurnick, Michael Joseph"],"dc:date":["2014-12-15T23:17:38Z","10000-01-01","1982"],"dc:description":["The vibronic rovibronic fluoresence excitation spectra of biacetyl, methylglyoxal, and pentanedione have been recorded for the excited singlet state of each molecule. In particular, the fluorescence of biacetyl in a molecular beam has been shown to exhibit the quantum beat effect in the time-resolved fluoresence. By the use of a simple, perturbation theory-derived analysis and also a more complicated, simulation-based method, the effective densities of the triplet states involved in the beat phenomena and the mean interaction energies for singlet-triplet state coupling have been determined.","The dissociation of ClCn and cyanogen at 193 nm by the use of an ArF laser has been investigated. The nascent rovibronic energy distributions were obtained by a simple laser-induced fluoresence method, and the angular and velocity distributions of the recoiling photofragments determined by the use of a unique, multichannel photomultiplier array for each individual internal energy state. The internal energy distributions show cold vibrational state distributions and hot rotational state distributions, while the translational energy distributions are very hot. The preliminary data for the angular distributions indicate an isotropic profile, which is the expected result for a predissociating molecule. Extensive details on the construction of the photomultiplier array are included, along with the necessary computer programs and electronics for the experiments.","Made available in DSpace on 2014-12-15T23:17:38Z (GMT). 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