{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/19131"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/19131","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"The proton Compton effect: A measurement of the electric and magnetic polarizabilities of the proton","abstract":"The Compton scattering cross section on hydrogen was measured at 60$\\sp\\circ$ and 135$\\sp\\circ$ in order to determine the largely unknown electric and magnetic polarizabilities of the proton. The cross sections were measured using tagged photons spanning 32 through 72 MeV in energy. In this energy range, the forward scattering cross section is well constrained by model-independent theory and was measured to check the systematics of our experimental and data reduction procedures. Within the statistical errors, the measured forward cross section agrees with theory. The following values for the polarizabilities are extracted from the measured cross sections: $\\bar\\alpha = (10.1 \\pm 2.2 \\pm 1.4)\\cdot 10\\sp{-4}fm\\sp3$ and $\\bar\\beta = (4.1 \\mp 2.2 \\mp 1.4)\\cdot 10\\sp{-4}fm\\sp3$, where the errors shown are statistical and systematic, respectively.","abstract_html":"The Compton scattering cross section on hydrogen was measured at 60$\\sp\\circ$ and 135$\\sp\\circ$ in order to determine the largely unknown electric and magnetic polarizabilities of the proton. The cross sections were measured using tagged photons spanning 32 through 72 MeV in energy. In this energy range, the forward scattering cross section is well constrained by model-independent theory and was measured to check the systematics of our experimental and data reduction procedures. Within the statistical errors, the measured forward cross section agrees with theory. The following values for the polarizabilities are extracted from the measured cross sections: <span class=\"etd-inline-math\">\\bar&alpha; = (10.1 \\pm 2.2 \\pm 1.4)\\cdot 10\\sp{-4}fm\\sp3</span> and <span class=\"etd-inline-math\">\\bar&beta; = (4.1 \\mp 2.2 \\mp 1.4)\\cdot 10\\sp{-4}fm\\sp3</span>, where the errors shown are statistical and systematic, respectively.","abstract_has_math":true,"creators":["Federspiel, Fred J."],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Eisenstein, Robert A."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T11:57:52Z","date_published":"2011-05-07T11:57:52Z","updated_at":"2026-07-22T22:25:12Z","subjects":["Physics, Nuclear"],"languages":["eng"],"rights":["Copyright 1991 Federspiel, Fred J."],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9210798","(UMI)AAI9210798"],"render_values":[{"text":"AAI9210798","href":null,"code":true},{"text":"(UMI)AAI9210798","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/19131","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Eisenstein, Robert A."]},{"key":"dc:creator","label":"Author","values":["Federspiel, Fred J."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T11:57:52Z","10000-01-01","1991"]},{"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 1991 Federspiel, Fred J."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9210798","(UMI)AAI9210798","http://hdl.handle.net/2142/19131"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The Compton scattering cross section on hydrogen was measured at 60$\\sp\\circ$ and 135$\\sp\\circ$ in order to determine the largely unknown electric and magnetic polarizabilities of the proton. The cross sections were measured using tagged photons spanning 32 through 72 MeV in energy. In this energy range, the forward scattering cross section is well constrained by model-independent theory and was measured to check the systematics of our experimental and data reduction procedures. Within the statistical errors, the measured forward cross section agrees with theory. The following values for the polarizabilities are extracted from the measured cross sections: $\\bar\\alpha = (10.1 \\pm 2.2 \\pm 1.4)\\cdot 10\\sp{-4}fm\\sp3$ and $\\bar\\beta = (4.1 \\mp 2.2 \\mp 1.4)\\cdot 10\\sp{-4}fm\\sp3$, where the errors shown are statistical and systematic, respectively.","Made available in DSpace on 2011-05-07T11:57:52Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9210798.pdf: 2757261 bytes, checksum: b5a1097e69fa8dc7879d04fbc1421fb2 (MD5) Previous issue date: 1991","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:34:52Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:13:31-05:00 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":["The proton Compton effect: A measurement of the electric and magnetic polarizabilities of the proton"]}]}],"canonical_facts":{"dc:contributor":["Eisenstein, Robert A."],"dc:creator":["Federspiel, Fred J."],"dc:date":["2011-05-07T11:57:52Z","10000-01-01","1991"],"dc:description":["The Compton scattering cross section on hydrogen was measured at 60$\\sp\\circ$ and 135$\\sp\\circ$ in order to determine the largely unknown electric and magnetic polarizabilities of the proton. The cross sections were measured using tagged photons spanning 32 through 72 MeV in energy. In this energy range, the forward scattering cross section is well constrained by model-independent theory and was measured to check the systematics of our experimental and data reduction procedures. Within the statistical errors, the measured forward cross section agrees with theory. The following values for the polarizabilities are extracted from the measured cross sections: $\\bar\\alpha = (10.1 \\pm 2.2 \\pm 1.4)\\cdot 10\\sp{-4}fm\\sp3$ and $\\bar\\beta = (4.1 \\mp 2.2 \\mp 1.4)\\cdot 10\\sp{-4}fm\\sp3$, where the errors shown are statistical and systematic, respectively.","Made available in DSpace on 2011-05-07T11:57:52Z (GMT). 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