{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/31308"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/31308","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Proton-Deuteron Elastic Scattering and Three-Nucleon Forces","abstract":"The spin observables Ay, iT11, and Cy,y in proton-deuteron elastic scattering were measured over the angular range 65° < ϴcm < 115° at a proton energy Tlab = 197 MeV. These data were acquired with a polarized proton beam and an internal vector-polarized deuteron gas target at the Indiana University Cyclotron Facility. The target was polarized by spin exchange with optically-pumped potassium; this experiment was the first to use this novel technique for polarizing hydrogen and deuterium. The data have been compared to existing Faddeev calculations using modern two-nucleon potentials which accurately reproduce the available two-nucleon scattering data. The calculations were also performed with the addition of the Tucson-Melbourne three-nucleon potential to identify kinematic regimes where the three-nucleon force makes a significant contribution. One such regime is in the vicinity of the minimum in the differential cross section for nucleon-deuteron elastic scattering at nucleon energies Tlab >~ 100 MeV, which includes the region covered by this experiment. The failure of calculations using only two-nucleon potentials to reproduce the results of this experiment is interpreted as evidence that some type of three-nucleon force is needed to explain the data.","abstract_html":"The spin observables Ay, iT11, and Cy,y in proton-deuteron elastic scattering were measured over the angular range 65° &lt; ϴcm &lt; 115° at a proton energy Tlab = 197 MeV. These data were acquired with a polarized proton beam and an internal vector-polarized deuteron gas target at the Indiana University Cyclotron Facility. The target was polarized by spin exchange with optically-pumped potassium; this experiment was the first to use this novel technique for polarizing hydrogen and deuterium. The data have been compared to existing Faddeev calculations using modern two-nucleon potentials which accurately reproduce the available two-nucleon scattering data. The calculations were also performed with the addition of the Tucson-Melbourne three-nucleon potential to identify kinematic regimes where the three-nucleon force makes a significant contribution. One such regime is in the vicinity of the minimum in the differential cross section for nucleon-deuteron elastic scattering at nucleon energies Tlab &gt;~ 100 MeV, which includes the region covered by this experiment. The failure of calculations using only two-nucleon potentials to reproduce the results of this experiment is interpreted as evidence that some type of three-nucleon force is needed to explain the data.","abstract_has_math":false,"creators":["Cadman, Robert Victor"],"institution":null,"degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Holt, R.J."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2012,"date_issued":"2012-05-31T16:49:47Z","date_published":"2012-05-31T16:49:47Z","updated_at":"2026-07-22T22:25:30Z","subjects":["proton-deuteron elastic scattering"],"languages":["en"],"rights":["©2001 Robert Victor Cadman"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["4423490"],"render_values":[{"text":"4423490","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/31308","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Holt, R.J."]},{"key":"dc:creator","label":"Author","values":["Cadman, Robert Victor"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2012-05-31T16:49:47Z","2012-11-26T18:41:44Z","2001"]},{"key":"dc:type","label":"Dc Type","values":["Dissertation / Thesis","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."]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["proton-deuteron elastic scattering"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["©2001 Robert Victor Cadman"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["4423490","http://hdl.handle.net/2142/31308"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The spin observables Ay, iT11, and Cy,y in proton-deuteron elastic scattering were measured over the angular range 65° < ϴcm < 115° at a proton energy Tlab = 197 MeV. These data were acquired with a polarized proton beam and an internal vector-polarized deuteron gas target at the Indiana University Cyclotron Facility. The target was polarized by spin exchange with optically-pumped potassium; this experiment was the first to use this novel technique for polarizing hydrogen and deuterium. The data have been compared to existing Faddeev calculations using modern two-nucleon potentials which accurately reproduce the available two-nucleon scattering data. The calculations were also performed with the addition of the Tucson-Melbourne three-nucleon potential to identify kinematic regimes where the three-nucleon force makes a significant contribution. One such regime is in the vicinity of the minimum in the differential cross section for nucleon-deuteron elastic scattering at nucleon energies Tlab >~ 100 MeV, which includes the region covered by this experiment. The failure of calculations using only two-nucleon potentials to reproduce the results of this experiment is interpreted as evidence that some type of three-nucleon force is needed to explain the data.","Submitted by Elizabeth Kent (eckent2@illinois.edu) on 2012-05-31T16:49:47Z No. of bitstreams: 1 2001_cadman.pdf: 3511305 bytes, checksum: 910863cc68530b882cca43ef13b157fd (MD5)","Made available in DSpace on 2012-05-31T16:49:47Z (GMT). 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These data were acquired with a polarized proton beam and an internal vector-polarized deuteron gas target at the Indiana University Cyclotron Facility. The target was polarized by spin exchange with optically-pumped potassium; this experiment was the first to use this novel technique for polarizing hydrogen and deuterium. The data have been compared to existing Faddeev calculations using modern two-nucleon potentials which accurately reproduce the available two-nucleon scattering data. The calculations were also performed with the addition of the Tucson-Melbourne three-nucleon potential to identify kinematic regimes where the three-nucleon force makes a significant contribution. One such regime is in the vicinity of the minimum in the differential cross section for nucleon-deuteron elastic scattering at nucleon energies Tlab >~ 100 MeV, which includes the region covered by this experiment. The failure of calculations using only two-nucleon potentials to reproduce the results of this experiment is interpreted as evidence that some type of three-nucleon force is needed to explain the data.","Submitted by Elizabeth Kent (eckent2@illinois.edu) on 2012-05-31T16:49:47Z No. of bitstreams: 1 2001_cadman.pdf: 3511305 bytes, checksum: 910863cc68530b882cca43ef13b157fd (MD5)","Made available in DSpace on 2012-05-31T16:49:47Z (GMT). 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