{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/19911"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/19911","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Group IIB dimers: Spectroscopy of molecular cadmium and gain demonstration in molecular mercury","abstract":"The $\\rm B\\sp1\\Sigma\\sbsp{u}{+}$ state of $\\rm Cd\\sb2,$ correlated with $\\rm Cd(\\sp1S)+Cd(5p\\ \\sp1P\\sb1),$ was studied by laser excitation spectroscopy from the lowest metastable state, $\\rm a\\sp3\\Pi\\sb{g}.$ The excitation spectrum of the $\\rm B\\sp1\\Sigma\\sbsp{u}{+}\\gets a\\sp3\\Pi\\sb{g}$ transition in the 555-725 nm spectral range is presented. Birge-Sponner analysis of the $\\rm v\\sp{\\prime\\prime}$ = 0,1 vibrational progressions yielded spectroscopic constants for both the $\\rm a\\sp3\\Pi\\sb{g}$ and $\\rm B\\sp1\\Sigma\\sbsp{u}{+}$ state potentials. Iterative trial and error simulation of the excitation spectrum established the difference between the internuclear separations $\\rm (\\Delta R\\sb{e})$ of the two states. The ultraviolet emission spectra of the $\\rm B\\sp1\\Sigma\\sbsp{u}{+}\\to X\\sp1\\Sigma\\sbsp{g}{+}$ (bound$\\to$free) transition are presented with comparison to the best calculated spectra to determine the $\\rm\\Delta R\\sb{e}$ between the $\\rm B\\sp1\\Sigma\\sbsp{u}{+}$ and $\\rm X\\sp1\\Sigma\\sbsp{g}{+}$ states.","abstract_html":"The $\\rm B\\sp1\\Sigma\\sbsp{u}{+}$ state of $\\rm Cd\\sb2,$ correlated with <span class=\"etd-inline-math\">\\rm Cd(\\sp1S)+Cd(5p \\sp1P\\sb1),</span> was studied by laser excitation spectroscopy from the lowest metastable state, $\\rm a\\sp3\\Pi\\sb{g}.$ The excitation spectrum of the $\\rm B\\sp1\\Sigma\\sbsp{u}{+}\\gets a\\sp3\\Pi\\sb{g}$ transition in the 555-725 nm spectral range is presented. Birge-Sponner analysis of the $\\rm v\\sp{\\prime\\prime}$ = 0,1 vibrational progressions yielded spectroscopic constants for both the $\\rm a\\sp3\\Pi\\sb{g}$ and $\\rm B\\sp1\\Sigma\\sbsp{u}{+}$ state potentials. Iterative trial and error simulation of the excitation spectrum established the difference between the internuclear separations $\\rm (\\Delta R\\sb{e})$ of the two states. The ultraviolet emission spectra of the $\\rm B\\sp1\\Sigma\\sbsp{u}{+}\\to X\\sp1\\Sigma\\sbsp{g}{+}$ (bound$\\to$free) transition are presented with comparison to the best calculated spectra to determine the $\\rm\\Delta R\\sb{e}$ between the $\\rm B\\sp1\\Sigma\\sbsp{u}{+}$ and $\\rm X\\sp1\\Sigma\\sbsp{g}{+}$ states.","abstract_has_math":true,"creators":["Tran, Hao Chi"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T12:22:36Z","date_published":"2011-05-07T12:22:36Z","updated_at":"2026-07-22T22:25:14Z","subjects":["Physics, Molecular"],"languages":["eng"],"rights":["Copyright 1996 Tran, Hao Chi"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["9780591254761","AAI9717339","(UMI)AAI9717339"],"render_values":[{"text":"9780591254761","href":null,"code":true},{"text":"AAI9717339","href":null,"code":true},{"text":"(UMI)AAI9717339","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/19911","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Tran, Hao Chi"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T12:22:36Z","10000-01-01","1997"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics"]},{"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":["Physics, Molecular"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1996 Tran, Hao Chi"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["9780591254761","AAI9717339","(UMI)AAI9717339","http://hdl.handle.net/2142/19911"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The $\\rm B\\sp1\\Sigma\\sbsp{u}{+}$ state of $\\rm Cd\\sb2,$ correlated with $\\rm Cd(\\sp1S)+Cd(5p\\ \\sp1P\\sb1),$ was studied by laser excitation spectroscopy from the lowest metastable state, $\\rm a\\sp3\\Pi\\sb{g}.$ The excitation spectrum of the $\\rm B\\sp1\\Sigma\\sbsp{u}{+}\\gets a\\sp3\\Pi\\sb{g}$ transition in the 555-725 nm spectral range is presented. Birge-Sponner analysis of the $\\rm v\\sp{\\prime\\prime}$ = 0,1 vibrational progressions yielded spectroscopic constants for both the $\\rm a\\sp3\\Pi\\sb{g}$ and $\\rm B\\sp1\\Sigma\\sbsp{u}{+}$ state potentials. Iterative trial and error simulation of the excitation spectrum established the difference between the internuclear separations $\\rm (\\Delta R\\sb{e})$ of the two states. The ultraviolet emission spectra of the $\\rm B\\sp1\\Sigma\\sbsp{u}{+}\\to X\\sp1\\Sigma\\sbsp{g}{+}$ (bound$\\to$free) transition are presented with comparison to the best calculated spectra to determine the $\\rm\\Delta R\\sb{e}$ between the $\\rm B\\sp1\\Sigma\\sbsp{u}{+}$ and $\\rm X\\sp1\\Sigma\\sbsp{g}{+}$ states.","$\\rm GO\\sbsp{u}{+}\\to XO\\sbsp{g}{+}$ bound-free emission spectra of $\\rm Hg\\sb2$ from several different vibrational levels were analyzed to determine the (1) $\\rm\\Delta R\\sb{e}$ between the $\\rm GO\\sbsp{u}{+}$ and $\\rm XO\\sbsp{g}{+}$ states, and (2) the region of internuclear separative over which the mostly dissociative ground state is bound. Photoassociative excitation spectrum is shown for the 265-285 nm spectral region which corroborates the emission data concerning the ground state.","Gain on the $\\rm GO\\sbsp{u}{+}\\to XO\\sbsp{g}{+}$ transition was observed at ${\\sim}227$ nm when a prepared population of $\\rm Hg\\sb2$ in the metastable $\\rm AO\\sbsp{g}{+}$ state is pumped with 564.3 nm radiation. This represents an anti-Stokes shift of ${\\sim}3.3$ eV of the pump radiation and confirms the reality of a population inversion between the $\\rm AO\\sbsp{g}{+}$ (storage) state and the dissociative $\\rm XO\\sbsp{g}{+}$ ground state.","Made available in DSpace on 2011-05-07T12:22:36Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9717339.pdf: 2079604 bytes, checksum: bca41d15a1abaca90f5a9cfe8c518fa4 (MD5) Previous issue date: 1996","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:40:16Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:17:12-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"]},{"key":"dc:title","label":"Title","values":["Group IIB dimers: Spectroscopy of molecular cadmium and gain demonstration in molecular mercury"]}]}],"canonical_facts":{"dc:creator":["Tran, Hao Chi"],"dc:date":["2011-05-07T12:22:36Z","10000-01-01","1997"],"dc:description":["The $\\rm B\\sp1\\Sigma\\sbsp{u}{+}$ state of $\\rm Cd\\sb2,$ correlated with $\\rm Cd(\\sp1S)+Cd(5p\\ \\sp1P\\sb1),$ was studied by laser excitation spectroscopy from the lowest metastable state, $\\rm a\\sp3\\Pi\\sb{g}.$ The excitation spectrum of the $\\rm B\\sp1\\Sigma\\sbsp{u}{+}\\gets a\\sp3\\Pi\\sb{g}$ transition in the 555-725 nm spectral range is presented. Birge-Sponner analysis of the $\\rm v\\sp{\\prime\\prime}$ = 0,1 vibrational progressions yielded spectroscopic constants for both the $\\rm a\\sp3\\Pi\\sb{g}$ and $\\rm B\\sp1\\Sigma\\sbsp{u}{+}$ state potentials. Iterative trial and error simulation of the excitation spectrum established the difference between the internuclear separations $\\rm (\\Delta R\\sb{e})$ of the two states. The ultraviolet emission spectra of the $\\rm B\\sp1\\Sigma\\sbsp{u}{+}\\to X\\sp1\\Sigma\\sbsp{g}{+}$ (bound$\\to$free) transition are presented with comparison to the best calculated spectra to determine the $\\rm\\Delta R\\sb{e}$ between the $\\rm B\\sp1\\Sigma\\sbsp{u}{+}$ and $\\rm X\\sp1\\Sigma\\sbsp{g}{+}$ states.","$\\rm GO\\sbsp{u}{+}\\to XO\\sbsp{g}{+}$ bound-free emission spectra of $\\rm Hg\\sb2$ from several different vibrational levels were analyzed to determine the (1) $\\rm\\Delta R\\sb{e}$ between the $\\rm GO\\sbsp{u}{+}$ and $\\rm XO\\sbsp{g}{+}$ states, and (2) the region of internuclear separative over which the mostly dissociative ground state is bound. Photoassociative excitation spectrum is shown for the 265-285 nm spectral region which corroborates the emission data concerning the ground state.","Gain on the $\\rm GO\\sbsp{u}{+}\\to XO\\sbsp{g}{+}$ transition was observed at ${\\sim}227$ nm when a prepared population of $\\rm Hg\\sb2$ in the metastable $\\rm AO\\sbsp{g}{+}$ state is pumped with 564.3 nm radiation. This represents an anti-Stokes shift of ${\\sim}3.3$ eV of the pump radiation and confirms the reality of a population inversion between the $\\rm AO\\sbsp{g}{+}$ (storage) state and the dissociative $\\rm XO\\sbsp{g}{+}$ ground state.","Made available in DSpace on 2011-05-07T12:22:36Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9717339.pdf: 2079604 bytes, checksum: bca41d15a1abaca90f5a9cfe8c518fa4 (MD5) Previous issue date: 1996","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:40:16Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:17:12-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","U of I Only"],"dc:identifier":["9780591254761","AAI9717339","(UMI)AAI9717339","http://hdl.handle.net/2142/19911"],"dc:language":["eng"],"dc:rights":["Copyright 1996 Tran, Hao Chi"],"dc:subject":["Physics, Molecular"],"dc:title":["Group IIB dimers: Spectroscopy of molecular cadmium and gain demonstration in molecular mercury"],"dc:type":["text"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:14Z"}