{"89251":{"#nid":"89251","#data":{"type":"event","title":"(12-0220) Prof. Michael Heaven, Emory University","body":[{"value":"\u003Cp\u003EProf. Michael Heaven, Emory University\n\u003C\/p\u003E\n\u003Cp\u003E\u003Cem\u003E\u003Cstrong\u003ESpectroscopic Studies of Prototype Actinide Compounds (and closely related species)\u003C\/strong\u003E\u003C\/em\u003E\n\u003C\/p\u003E\n\u003Cp\u003E\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp; High-level theoretical models of the\nelectronic structures and properties of actinide compounds are being developed\nby several research groups.\u0026nbsp; This is a\nchallenging problem due to the need for explicit treatment of relativistic\neffects, and the circumstance that many of these molecules exist in states\nwhere the \u003Cem\u003Ef\u003C\/em\u003E and\/or \u003Cem\u003Ed\u003C\/em\u003E orbitals are partially filled.\u0026nbsp; Current theoretical models are being\nevaluated through comparisons with experimental results.\u0026nbsp; Gas phase data are most suitable for this\npurpose, but there have been very few gas phase studies of actinide compounds.\u0026nbsp; We are addressing this issue by carrying out\nspectroscopic studies of simple uranium and thorium compounds.\u0026nbsp; Multiple resonance spectroscopy and jet\ncooling techniques are being used to unravel the complex electronic spectra of\nthese compounds.\u0026nbsp; \u003C\/p\u003E\n\n\u003Cp\u003E\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0026nbsp; Our recent studies have focused on\nthe electronic structures of the oxides, sulfides fluorides and nitrides of Th\nand Hf.\u0026nbsp; Comparisons between isoeletronic\nspecies indicate that relativistic affects play a relatively minor role in the\nionic bonding of ThO, ThO\u003Csup\u003E+\u003C\/sup\u003E, ThF and ThF\u003Csup\u003E+\u003C\/sup\u003E.\u0026nbsp; ThO and the ions HfF\u003Csup\u003E+\u003C\/sup\u003E and ThF\u003Csup\u003E+\u003C\/sup\u003E\nhave been identified as excellent candidates for measurements that probe the\nelectric dipole moment of the electron (a manifestation of CP symmetry\nviolation).\u0026nbsp; The characteristics that\nrender these molecules favorable for studies of fundamental constants will be\nreviewed, and the first gas phase spectra for the Th fluoride and nitride\nspecies will be presented.\u003C\/p\u003E\u003Cp\u003EAtlanta Area Chemical Physics (AACP) Seminar Series\n\u003C\/p\u003E\n\u003Cp\u003EFor more information contact \u003Ca href=\u0022mailto:paul.wine@chemistry.gatech.edu\u0022\u003EProf. Paul Wine\u003C\/a\u003E (404-894-3425).\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003EProf. Michael Heaven, Emory University\n\n\u003Cem\u003E\u003Cstrong\u003E\u003C\/strong\u003E\u003C\/em\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cem\u003E\u003Cstrong\u003ESpectroscopic Studies of Prototype Actinide Compounds (and closely related species)\u003C\/strong\u003E\u003C\/em\u003E\u003C\/p\u003E\u003Cp\u003EAACP Seminar Series\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"Prof. Michael Heaven, Emory University"}],"uid":"27275","created_gmt":"2011-08-15 00:00:00","changed_gmt":"2016-10-08 01:50:49","author":"Shirley Tomes","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2012-02-20T19:00:00-05:00","event_time_end":"2012-02-20T20:00:00-05:00","event_time_end_last":"2012-02-20T20:00:00-05:00","gmt_time_start":"2012-02-21 00:00:00","gmt_time_end":"2012-02-21 01:00:00","gmt_time_end_last":"2012-02-21 01:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"related_links":[{"url":"http:\/\/www.chemistry.emory.edu\/faculty\/heaven.html","title":"Prof. Michael Heaven, Emory University"}],"groups":[{"id":"85951","name":"School of Chemistry and Biochemistry"}],"categories":[],"keywords":[{"id":"1809","name":"physical chemistry"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1795","name":"Seminar\/Lecture\/Colloquium"}],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cp\u003E\u003Cstrong\u003EShirley Tomes\u003C\/strong\u003E\u003Cbr \/\u003EChemistry \u0026amp; Biochemistry\u003Cbr \/\u003E\u003Ca href=\u0022http:\/\/www.gatech.edu\/contact\/index.html?id=st81\u0022\u003EContact Shirley Tomes\u003C\/a\u003E\u003Cbr \/\u003E\u003Cstrong\u003E404-894-0591\u003C\/strong\u003E\u003C\/p\u003E","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}