{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/20035"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/20035","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Measurement of the fifth structure function in quasi-elastic proton knock-out from carbon","abstract":"This thesis reports the first measurement of the 'fifth structure function' in coincident electron scattering. This new observable breaks the symmetry for detecting nuclear decay products above and below the electron scattering plane when the incident electrons are longitudinally polarized. 560 MeV polarized electrons were scattered from a $\\sp{12}$C target, and electrons were detected in the ELSSY spectrometer in coincidence with quasi-elastic knock-out protons, which were detected in the new Out Of Plane Spectrometer (OOPS). We measured polarization asymmetries and total cross sections at a momentum transfer of 1.8 $fm\\sp{-1}$ and at two proton angles out of the electron scattering plane and directly above the momentum transfer vector. This $\\sp{12}$C($\\vec e,e\\sp\\prime p$) measurement, together with another measurement on deuterium in identical kinematics, was performed at the Bates Linear Accelerator Center in Middleton, MA, in July, 1991.","abstract_html":"This thesis reports the first measurement of the 'fifth structure function' in coincident electron scattering. This new observable breaks the symmetry for detecting nuclear decay products above and below the electron scattering plane when the incident electrons are longitudinally polarized. 560 MeV polarized electrons were scattered from a $\\sp{12}$C target, and electrons were detected in the ELSSY spectrometer in coincidence with quasi-elastic knock-out protons, which were detected in the new Out Of Plane Spectrometer (OOPS). We measured polarization asymmetries and total cross sections at a momentum transfer of 1.8 $fm\\sp{-1}$ and at two proton angles out of the electron scattering plane and directly above the momentum transfer vector. This $\\sp{12}$C($\\vec e,e\\sp\\prime p$) measurement, together with another measurement on deuterium in identical kinematics, was performed at the Bates Linear Accelerator Center in Middleton, MA, in July, 1991.","abstract_has_math":true,"creators":["Mandeville, Joseph Bernard"],"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":"2011-05-07T12:26:44Z","date_published":"2011-05-07T12:26:44Z","updated_at":"2026-07-22T22:25:15Z","subjects":["Physics, Nuclear"],"languages":["eng"],"rights":["Copyright 1993 Mandeville, Joseph Bernard"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9411703","(UMI)AAI9411703"],"render_values":[{"text":"AAI9411703","href":null,"code":true},{"text":"(UMI)AAI9411703","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/20035","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":["Mandeville, Joseph Bernard"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T12:26:44Z","10000-01-01","1993"]},{"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 1993 Mandeville, Joseph Bernard"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9411703","(UMI)AAI9411703","http://hdl.handle.net/2142/20035"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["This thesis reports the first measurement of the 'fifth structure function' in coincident electron scattering. This new observable breaks the symmetry for detecting nuclear decay products above and below the electron scattering plane when the incident electrons are longitudinally polarized. 560 MeV polarized electrons were scattered from a $\\sp{12}$C target, and electrons were detected in the ELSSY spectrometer in coincidence with quasi-elastic knock-out protons, which were detected in the new Out Of Plane Spectrometer (OOPS). We measured polarization asymmetries and total cross sections at a momentum transfer of 1.8 $fm\\sp{-1}$ and at two proton angles out of the electron scattering plane and directly above the momentum transfer vector. This $\\sp{12}$C($\\vec e,e\\sp\\prime p$) measurement, together with another measurement on deuterium in identical kinematics, was performed at the Bates Linear Accelerator Center in Middleton, MA, in July, 1991.","These fifth structure function measurements inaugurate the out-of-plane program at Bates laboratory. In order to isolate the interference structure functions which arise in coincident scattering using polarized incident electrons, we have advocated simultaneous measurements using identical detectors positioned on a cone at $\\pi$/2 intervals around the momentum transfer vector. We have designed a prototype out-of-plane spectrometer as a precursor to a four-spectrometer system, constructed this 15-ton device, demonstrated that the OOPS matches our design goals, and performed the first measurements of a new observable.","\"The fifth structure function arises from the interference between two or more reaction amplitudes with different phases. At quasi-elastic kinematics, this quantity is primarily sensitive to the interference between the dominant knock-out amplitude and knock-out followed by nucleon rescattering with the residual nucleus. With only two points and a somewhat limited statistical precision, this measurement does not sufficiently constrain competing models of final state interactions. However, we emphasize the accuracy that is attainable with this method, and we discuss the importance of fifth structure function measurements in the context of the separation of all the interference structure functions. We expect that imminent accelerator and detector developments will lead to dramatic improvements in the \"\"ease\"\" and statistical precision of these measurements in the near future.\"","Made available in DSpace on 2011-05-07T12:26:44Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9411703.pdf: 9541757 bytes, checksum: 17b94f9339414c30979c997a79bbd2a8 (MD5) Previous issue date: 1993","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:41:07Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:17:44-05:00 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":["Measurement of the fifth structure function in quasi-elastic proton knock-out from carbon"]}]}],"canonical_facts":{"dc:contributor":["Papanicolas, Costas N."],"dc:creator":["Mandeville, Joseph Bernard"],"dc:date":["2011-05-07T12:26:44Z","10000-01-01","1993"],"dc:description":["This thesis reports the first measurement of the 'fifth structure function' in coincident electron scattering. This new observable breaks the symmetry for detecting nuclear decay products above and below the electron scattering plane when the incident electrons are longitudinally polarized. 560 MeV polarized electrons were scattered from a $\\sp{12}$C target, and electrons were detected in the ELSSY spectrometer in coincidence with quasi-elastic knock-out protons, which were detected in the new Out Of Plane Spectrometer (OOPS). We measured polarization asymmetries and total cross sections at a momentum transfer of 1.8 $fm\\sp{-1}$ and at two proton angles out of the electron scattering plane and directly above the momentum transfer vector. This $\\sp{12}$C($\\vec e,e\\sp\\prime p$) measurement, together with another measurement on deuterium in identical kinematics, was performed at the Bates Linear Accelerator Center in Middleton, MA, in July, 1991.","These fifth structure function measurements inaugurate the out-of-plane program at Bates laboratory. In order to isolate the interference structure functions which arise in coincident scattering using polarized incident electrons, we have advocated simultaneous measurements using identical detectors positioned on a cone at $\\pi$/2 intervals around the momentum transfer vector. We have designed a prototype out-of-plane spectrometer as a precursor to a four-spectrometer system, constructed this 15-ton device, demonstrated that the OOPS matches our design goals, and performed the first measurements of a new observable.","\"The fifth structure function arises from the interference between two or more reaction amplitudes with different phases. At quasi-elastic kinematics, this quantity is primarily sensitive to the interference between the dominant knock-out amplitude and knock-out followed by nucleon rescattering with the residual nucleus. With only two points and a somewhat limited statistical precision, this measurement does not sufficiently constrain competing models of final state interactions. However, we emphasize the accuracy that is attainable with this method, and we discuss the importance of fifth structure function measurements in the context of the separation of all the interference structure functions. We expect that imminent accelerator and detector developments will lead to dramatic improvements in the \"\"ease\"\" and statistical precision of these measurements in the near future.\"","Made available in DSpace on 2011-05-07T12:26:44Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9411703.pdf: 9541757 bytes, checksum: 17b94f9339414c30979c997a79bbd2a8 (MD5) Previous issue date: 1993","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:41:07Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:17:44-05:00 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":["AAI9411703","(UMI)AAI9411703","http://hdl.handle.net/2142/20035"],"dc:language":["eng"],"dc:rights":["Copyright 1993 Mandeville, Joseph Bernard"],"dc:subject":["Physics, Nuclear"],"dc:title":["Measurement of the fifth structure function in quasi-elastic proton knock-out from carbon"],"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":"2026-07-22T22:25:15Z"}