{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/25747"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/25747","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Differential cross sections for the reaction He4(gamma, p)H3 from 55 to 165 MeV","abstract":"Differential cross sections have been measured for the reaction He4 (y,p)H3 for incident photons of 55 to 165 MeV. Outgoing protons and tritons from a low temperature He target were detected in coincidence at three angular settings in the 1aboratqry: (8p ' 8T) = (59.5, 106°), (88.5°, 75°), and (118°, 47.5°). The triton detection system consisted of three semiconductor detectors followed by a plastic scintillator. The proton detection system consisted of four plastic scinti11ators and was large enough to cq11ect all protons correlated with tritons in the triton system. The pulses from the calibrated detectors were used to identify the particles and measure their energies. The results show an exponential decrease in the differential cross sections with increasing gamma ray energy with possible leveling off at the region of pion threshold. The angular distribution of the protons is peaked more strongly forward as the energy increases. A simple calculation relates the differential cross sections at the, several angles to a common function of the proton or triton momentum. Results of this calculation are compared with the data.","abstract_html":"Differential cross sections have been measured for the reaction He4 (y,p)H3 for incident photons of 55 to 165 MeV. Outgoing protons and tritons from a low temperature He target were detected in coincidence at three angular settings in the 1aboratqry: (8p ' 8T) = (59.5, 106°), (88.5°, 75°), and (118°, 47.5°). The triton detection system consisted of three semiconductor detectors followed by a plastic scintillator. The proton detection system consisted of four plastic scinti11ators and was large enough to cq11ect all protons correlated with tritons in the triton system. The pulses from the calibrated detectors were used to identify the particles and measure their energies. The results show an exponential decrease in the differential cross sections with increasing gamma ray energy with possible leveling off at the region of pion threshold. The angular distribution of the protons is peaked more strongly forward as the energy increases. A simple calculation relates the differential cross sections at the, several angles to a common function of the proton or triton momentum. Results of this calculation are compared with the data.","abstract_has_math":false,"creators":["Stenberg, Charles Gustave"],"institution":null,"degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Koester, L.J."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-07-11T14:36:21Z","date_published":"2011-07-11T14:36:21Z","updated_at":"2026-07-22T22:25:26Z","subjects":["differential cross sections","incident photons","tritons","proton detection system"],"languages":["en"],"rights":["1968 Charles Gustave Stenberg"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["6086274"],"render_values":[{"text":"6086274","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/25747","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Koester, L.J."]},{"key":"dc:creator","label":"Author","values":["Stenberg, Charles Gustave"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-07-11T14:36:21Z","10000-01-01","1968"]},{"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":["differential cross sections","incident photons","tritons","proton detection system"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["1968 Charles Gustave Stenberg"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["6086274","http://hdl.handle.net/2142/25747"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Differential cross sections have been measured for the reaction He4 (y,p)H3 for incident photons of 55 to 165 MeV. Outgoing protons and tritons from a low temperature He target were detected in coincidence at three angular settings in the 1aboratqry: (8p ' 8T) = (59.5, 106°), (88.5°, 75°), and (118°, 47.5°). The triton detection system consisted of three semiconductor detectors followed by a plastic scintillator. The proton detection system consisted of four plastic scinti11ators and was large enough to cq11ect all protons correlated with tritons in the triton system. The pulses from the calibrated detectors were used to identify the particles and measure their energies. The results show an exponential decrease in the differential cross sections with increasing gamma ray energy with possible leveling off at the region of pion threshold. The angular distribution of the protons is peaked more strongly forward as the energy increases. A simple calculation relates the differential cross sections at the, several angles to a common function of the proton or triton momentum. Results of this calculation are compared with the data.","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-11T14:36:21Z No. of bitstreams: 1 1968_stenberg.pdf: 3236489 bytes, checksum: 8371eca4739e4e35e45b40e446a77e57 (MD5)","Made available in DSpace on 2011-07-11T14:36:21Z (GMT). No. of bitstreams: 1 1968_stenberg.pdf: 3236489 bytes, checksum: 8371eca4739e4e35e45b40e446a77e57 (MD5) Previous issue date: 1968","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-07-11T14:36:21Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:32:41-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis","Thesis","U of I Only"]},{"key":"dc:title","label":"Title","values":["Differential cross sections for the reaction He4(gamma, p)H3 from 55 to 165 MeV"]}]}],"canonical_facts":{"dc:contributor":["Koester, L.J."],"dc:creator":["Stenberg, Charles Gustave"],"dc:date":["2011-07-11T14:36:21Z","10000-01-01","1968"],"dc:description":["Differential cross sections have been measured for the reaction He4 (y,p)H3 for incident photons of 55 to 165 MeV. Outgoing protons and tritons from a low temperature He target were detected in coincidence at three angular settings in the 1aboratqry: (8p ' 8T) = (59.5, 106°), (88.5°, 75°), and (118°, 47.5°). The triton detection system consisted of three semiconductor detectors followed by a plastic scintillator. The proton detection system consisted of four plastic scinti11ators and was large enough to cq11ect all protons correlated with tritons in the triton system. The pulses from the calibrated detectors were used to identify the particles and measure their energies. The results show an exponential decrease in the differential cross sections with increasing gamma ray energy with possible leveling off at the region of pion threshold. The angular distribution of the protons is peaked more strongly forward as the energy increases. A simple calculation relates the differential cross sections at the, several angles to a common function of the proton or triton momentum. Results of this calculation are compared with the data.","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-11T14:36:21Z No. of bitstreams: 1 1968_stenberg.pdf: 3236489 bytes, checksum: 8371eca4739e4e35e45b40e446a77e57 (MD5)","Made available in DSpace on 2011-07-11T14:36:21Z (GMT). No. of bitstreams: 1 1968_stenberg.pdf: 3236489 bytes, checksum: 8371eca4739e4e35e45b40e446a77e57 (MD5) Previous issue date: 1968","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-07-11T14:36:21Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:32:41-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis","Thesis","U of I Only"],"dc:identifier":["6086274","http://hdl.handle.net/2142/25747"],"dc:language":["en"],"dc:rights":["1968 Charles Gustave Stenberg"],"dc:subject":["differential cross sections","incident photons","tritons","proton detection system"],"dc:title":["Differential cross sections for the reaction He4(gamma, p)H3 from 55 to 165 MeV"],"dc:type":["Dissertation / Thesis","text"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."]},"updated_at":"2026-07-22T22:25:26Z"}