{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/22768"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/22768","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Investigation of the giant resonance region of carbon with (electron,electron'photon)","abstract":"We report here on progress toward utilization of the (e, e$\\sp\\prime\\gamma$) reaction for the study of giant resonances. The reaction mechanism of this purely leptonic probe is known since it is governed by quantum electrodynamics. Because the long wavelength approximation is applicable, for the emitted photon, the (e, e$\\sp\\prime\\gamma$) reaction is highly selective of the multipolarity of the giant resonance response. However, the small photon-emission probability of the giant resonances, their broad nature, and competition from bremsstrahlung photons, have suggested that use of the (e, e$\\sp\\prime\\gamma$) reaction in the study of the giant resonances would be very difficult.","abstract_html":"We report here on progress toward utilization of the (e, e<span class=\"etd-inline-math\">\\sp\\prime&gamma;</span>) reaction for the study of giant resonances. The reaction mechanism of this purely leptonic probe is known since it is governed by quantum electrodynamics. Because the long wavelength approximation is applicable, for the emitted photon, the (e, e<span class=\"etd-inline-math\">\\sp\\prime&gamma;</span>) reaction is highly selective of the multipolarity of the giant resonance response. However, the small photon-emission probability of the giant resonances, their broad nature, and competition from bremsstrahlung photons, have suggested that use of the (e, e<span class=\"etd-inline-math\">\\sp\\prime&gamma;</span>) reaction in the study of the giant resonances would be very difficult.","abstract_has_math":true,"creators":["Ammons, Edsel Albert"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Papanicolas, Costas N."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T13:50:52Z","date_published":"2011-05-07T13:50:52Z","updated_at":"2026-07-22T22:25:20Z","subjects":["Physics, Nuclear"],"languages":["eng"],"rights":["Copyright 1992 Ammons, Edsel Albert, Jr"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9236389","(UMI)AAI9236389"],"render_values":[{"text":"AAI9236389","href":null,"code":true},{"text":"(UMI)AAI9236389","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/22768","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Papanicolas, Costas N."]},{"key":"dc:creator","label":"Author","values":["Ammons, Edsel Albert"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T13:50:52Z","10000-01-01","1992"]},{"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, Nuclear"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1992 Ammons, Edsel Albert, Jr"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9236389","(UMI)AAI9236389","http://hdl.handle.net/2142/22768"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["We report here on progress toward utilization of the (e, e$\\sp\\prime\\gamma$) reaction for the study of giant resonances. The reaction mechanism of this purely leptonic probe is known since it is governed by quantum electrodynamics. Because the long wavelength approximation is applicable, for the emitted photon, the (e, e$\\sp\\prime\\gamma$) reaction is highly selective of the multipolarity of the giant resonance response. However, the small photon-emission probability of the giant resonances, their broad nature, and competition from bremsstrahlung photons, have suggested that use of the (e, e$\\sp\\prime\\gamma$) reaction in the study of the giant resonances would be very difficult.","In a series of experiments at the Nuclear Physics Laboratory of the University of Illinois, utilizing a 100 MeV electron beam provided by the MUSL-2 microtron, measurements on $\\sp{12}$C have demonstrated the feasibility of the (e, e$\\sp\\prime\\gamma$) probe of the giant resonance region. Measurements were taken at momentum transfers of.32 fm$\\sp{-1}$ and.46 fm$\\sp{-1}$ for excitation energies covering the 13 to 30 MeV region. By forming missing energy spectra, cross sections, both differential and integrated over the giant resonance region, were obtained for (e, e$\\sp\\prime\\gamma$) in which the nucleus exits in the ground state or in one of the first two excited states at 4.44 MeV and 7.65 MeV.","Made available in DSpace on 2011-05-07T13:50:52Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9236389.pdf: 5667335 bytes, checksum: 5a1f463e0bbc68a212ed4044e26fa127 (MD5) Previous issue date: 1992","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:59:52Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:28:17-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","\"Removed \"\"Jr.\"\" from Ammons to match other item deposits. Metadata cleaned/updated by kappleg2@illinois.edu 2015-5-13.\"","ETDs are only available to UIUC Users without author permission","U of I Only"]},{"key":"dc:title","label":"Title","values":["Investigation of the giant resonance region of carbon with (electron,electron'photon)"]}]}],"canonical_facts":{"dc:contributor":["Papanicolas, Costas N."],"dc:creator":["Ammons, Edsel Albert"],"dc:date":["2011-05-07T13:50:52Z","10000-01-01","1992"],"dc:description":["We report here on progress toward utilization of the (e, e$\\sp\\prime\\gamma$) reaction for the study of giant resonances. The reaction mechanism of this purely leptonic probe is known since it is governed by quantum electrodynamics. Because the long wavelength approximation is applicable, for the emitted photon, the (e, e$\\sp\\prime\\gamma$) reaction is highly selective of the multipolarity of the giant resonance response. However, the small photon-emission probability of the giant resonances, their broad nature, and competition from bremsstrahlung photons, have suggested that use of the (e, e$\\sp\\prime\\gamma$) reaction in the study of the giant resonances would be very difficult.","In a series of experiments at the Nuclear Physics Laboratory of the University of Illinois, utilizing a 100 MeV electron beam provided by the MUSL-2 microtron, measurements on $\\sp{12}$C have demonstrated the feasibility of the (e, e$\\sp\\prime\\gamma$) probe of the giant resonance region. Measurements were taken at momentum transfers of.32 fm$\\sp{-1}$ and.46 fm$\\sp{-1}$ for excitation energies covering the 13 to 30 MeV region. By forming missing energy spectra, cross sections, both differential and integrated over the giant resonance region, were obtained for (e, e$\\sp\\prime\\gamma$) in which the nucleus exits in the ground state or in one of the first two excited states at 4.44 MeV and 7.65 MeV.","Made available in DSpace on 2011-05-07T13:50:52Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9236389.pdf: 5667335 bytes, checksum: 5a1f463e0bbc68a212ed4044e26fa127 (MD5) Previous issue date: 1992","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:59:52Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:28:17-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","\"Removed \"\"Jr.\"\" from Ammons to match other item deposits. Metadata cleaned/updated by kappleg2@illinois.edu 2015-5-13.\"","ETDs are only available to UIUC Users without author permission","U of I Only"],"dc:identifier":["AAI9236389","(UMI)AAI9236389","http://hdl.handle.net/2142/22768"],"dc:language":["eng"],"dc:rights":["Copyright 1992 Ammons, Edsel Albert, Jr"],"dc:subject":["Physics, Nuclear"],"dc:title":["Investigation of the giant resonance region of carbon with (electron,electron'photon)"],"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":"2026-07-22T22:25:20Z"}