{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/66240"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/66240","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Iodine-Monofluoride (If) Emission Spectrum and Formation Kinetics in Electron Beam Produced Plasmas","abstract":"Electron beam excitation of argon/CF(,3)I/NF(,3) gas mixtures produces intense blue-green fluorescence attributed to the heteronuclear interhalogen iodine-monofluoride (IF). Analysis of the observed IF emission spectrum has shown that it is most likely due to E (--->) A('3)(PI)(,1) transitions of this molecule. Fluorescence decay measurements indicate that the I('*)(('4)P) species is the IF('*)(E) precursor, and that the observed fluorescence decay rates are controlled by deactivation of this excited iodine species. Collisional deactivation rate coefficients of I('*)(('4)P) by argon, xenon, CF(,3)I, NF(,3), and UF(,6) were measured and are reported.","abstract_html":"Electron beam excitation of argon/CF(,3)I/NF(,3) gas mixtures produces intense blue-green fluorescence attributed to the heteronuclear interhalogen iodine-monofluoride (IF). Analysis of the observed IF emission spectrum has shown that it is most likely due to E (--->) A('3)(PI)(,1) transitions of this molecule. Fluorescence decay measurements indicate that the I('*)(('4)P) species is the IF('*)(E) precursor, and that the observed fluorescence decay rates are controlled by deactivation of this excited iodine species. Collisional deactivation rate coefficients of I('*)(('4)P) by argon, xenon, CF(,3)I, NF(,3), and UF(,6) were measured and are reported.","abstract_has_math":false,"creators":["Hutchison, Sheldon Butt"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Electrical Engineering","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-12-12T20:55:17Z","date_published":"2014-12-12T20:55:17Z","updated_at":"2026-07-22T22:25:55Z","subjects":["Engineering, Electronics and Electrical"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI8108551"],"render_values":[{"text":"(UMI)AAI8108551","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/66240","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Hutchison, Sheldon Butt"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2014-12-12T20:55:17Z","10000-01-01","1980"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical Engineering"]},{"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":["Engineering, Electronics and Electrical"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/66240","(UMI)AAI8108551"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Electron beam excitation of argon/CF(,3)I/NF(,3) gas mixtures produces intense blue-green fluorescence attributed to the heteronuclear interhalogen iodine-monofluoride (IF). Analysis of the observed IF emission spectrum has shown that it is most likely due to E (--->) A('3)(PI)(,1) transitions of this molecule. Fluorescence decay measurements indicate that the I('*)(('4)P) species is the IF('*)(E) precursor, and that the observed fluorescence decay rates are controlled by deactivation of this excited iodine species. Collisional deactivation rate coefficients of I('*)(('4)P) by argon, xenon, CF(,3)I, NF(,3), and UF(,6) were measured and are reported.","Mathematical modelling of the IF('*) fluorescence pulse suggests that the effective lifetime of the I('*)(('4)P) species increases with time during the pulse due to radiative trapping of atomic iodine emission. This model also indicates that radiative decay of the Ar(,2)('*) (('1)(SUMM)(,u)('+)) species is directly responsible for I('*)(('4)P) production.","Discharge pumped IF('*) laser experiments are also briefly described. Lasing in this system has been achieved on a number of lines between approximately 480 nm and 496 nm for helium/CF(,3)I/NF(,3) gas mixtures.","Made available in DSpace on 2014-12-12T20:55:17Z (GMT). No. of bitstreams: 1 8108551.pdf: 1995982 bytes, checksum: 664f05befe5d39b08310aa3cc0712ca2 (MD5) Previous issue date: 1980","Embargo set by: Seth Robbins for item 66419 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","76 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1980."]},{"key":"dc:title","label":"Title","values":["Iodine-Monofluoride (If) Emission Spectrum and Formation Kinetics in Electron Beam Produced Plasmas"]}]}],"canonical_facts":{"dc:creator":["Hutchison, Sheldon Butt"],"dc:date":["2014-12-12T20:55:17Z","10000-01-01","1980"],"dc:description":["Electron beam excitation of argon/CF(,3)I/NF(,3) gas mixtures produces intense blue-green fluorescence attributed to the heteronuclear interhalogen iodine-monofluoride (IF). Analysis of the observed IF emission spectrum has shown that it is most likely due to E (--->) A('3)(PI)(,1) transitions of this molecule. Fluorescence decay measurements indicate that the I('*)(('4)P) species is the IF('*)(E) precursor, and that the observed fluorescence decay rates are controlled by deactivation of this excited iodine species. Collisional deactivation rate coefficients of I('*)(('4)P) by argon, xenon, CF(,3)I, NF(,3), and UF(,6) were measured and are reported.","Mathematical modelling of the IF('*) fluorescence pulse suggests that the effective lifetime of the I('*)(('4)P) species increases with time during the pulse due to radiative trapping of atomic iodine emission. This model also indicates that radiative decay of the Ar(,2)('*) (('1)(SUMM)(,u)('+)) species is directly responsible for I('*)(('4)P) production.","Discharge pumped IF('*) laser experiments are also briefly described. Lasing in this system has been achieved on a number of lines between approximately 480 nm and 496 nm for helium/CF(,3)I/NF(,3) gas mixtures.","Made available in DSpace on 2014-12-12T20:55:17Z (GMT). No. of bitstreams: 1 8108551.pdf: 1995982 bytes, checksum: 664f05befe5d39b08310aa3cc0712ca2 (MD5) Previous issue date: 1980","Embargo set by: Seth Robbins for item 66419 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","76 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1980."],"dc:identifier":["http://hdl.handle.net/2142/66240","(UMI)AAI8108551"],"dc:language":["eng"],"dc:subject":["Engineering, Electronics and Electrical"],"dc:title":["Iodine-Monofluoride (If) Emission Spectrum and Formation Kinetics in Electron Beam Produced Plasmas"],"dc:type":["text"],"thesis:degree_discipline":["Electrical Engineering"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:55Z"}