{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/25723"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/25723","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Photoproduction of pi�� mesons from He3 with 340 MeV bremsstrahlung","abstract":"\"Cross sections for the coherent photoproduction of 71\"\"0 mesons from He3(gammaHe3 -> pi°He 3) were measured for recoil angles of 200, 300, 400, and 500 from the direction of the incident photon. A gaseous He3 target was irradiated by 340 MeV bremsstrahlung; provided by the 'University of Illinois betatron. The He3 gas was maintained at liquid hydrogen temperature and at a pressure of slightly above one atmosphere. The recoil nuclei were observed with silicon semiconductor detectors. At least one gamma ray from the pion decay was detected with a lead glass Cherenkov counter. A coincidence between a semiconductor detector and the Cherenkov counter triggered an oscilloscope on which all pulses were then displayed and photographed. These photographs constitute the experimental data.\"","abstract_html":""Cross sections for the coherent photoproduction of 71""0 mesons from He3(gammaHe3 -> pi°He 3) were measured for recoil angles of 200, 300, 400, and 500 from the direction of the incident photon. A gaseous He3 target was irradiated by 340 MeV bremsstrahlung; provided by the 'University of Illinois betatron. The He3 gas was maintained at liquid hydrogen temperature and at a pressure of slightly above one atmosphere. The recoil nuclei were observed with silicon semiconductor detectors. At least one gamma ray from the pion decay was detected with a lead glass Cherenkov counter. A coincidence between a semiconductor detector and the Cherenkov counter triggered an oscilloscope on which all pulses were then displayed and photographed. These photographs constitute the experimental data."","abstract_has_math":false,"creators":["Blecher, Marvin"],"institution":null,"degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Hanson, A.O."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-07-08T17:08:22Z","date_published":"2011-07-08T17:08:22Z","updated_at":"2026-07-22T22:25:26Z","subjects":["pi mesons","bremsstrahlung","photoproduction","coherent photoproduction","recoil angles"],"languages":["en"],"rights":["1968 Marvin Blecher"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["6082649"],"render_values":[{"text":"6082649","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/25723","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Hanson, A.O."]},{"key":"dc:creator","label":"Author","values":["Blecher, Marvin"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-07-08T17:08:22Z","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":["pi mesons","bremsstrahlung","photoproduction","coherent photoproduction","recoil angles"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["1968 Marvin Blecher"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["6082649","http://hdl.handle.net/2142/25723"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["\"Cross sections for the coherent photoproduction of 71\"\"0 mesons from He3(gammaHe3 -> pi°He 3) were measured for recoil angles of 200, 300, 400, and 500 from the direction of the incident photon. A gaseous He3 target was irradiated by 340 MeV bremsstrahlung; provided by the 'University of Illinois betatron. The He3 gas was maintained at liquid hydrogen temperature and at a pressure of slightly above one atmosphere. The recoil nuclei were observed with silicon semiconductor detectors. At least one gamma ray from the pion decay was detected with a lead glass Cherenkov counter. A coincidence between a semiconductor detector and the Cherenkov counter triggered an oscilloscope on which all pulses were then displayed and photographed. These photographs constitute the experimental data.\"","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-08T17:08:21Z No. of bitstreams: 1 1968_blecher.pdf: 2820530 bytes, checksum: 45bbd69cec9062bbc8535f2929520a2d (MD5)","Made available in DSpace on 2011-07-08T17:08:22Z (GMT). No. of bitstreams: 1 1968_blecher.pdf: 2820530 bytes, checksum: 45bbd69cec9062bbc8535f2929520a2d (MD5) Previous issue date: 1968","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-07-08T17:08:22Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:32:50-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis","Thesis","U of I Only"]},{"key":"dc:title","label":"Title","values":["Photoproduction of pi�� mesons from He3 with 340 MeV bremsstrahlung"]}]}],"canonical_facts":{"dc:contributor":["Hanson, A.O."],"dc:creator":["Blecher, Marvin"],"dc:date":["2011-07-08T17:08:22Z","10000-01-01","1968"],"dc:description":["\"Cross sections for the coherent photoproduction of 71\"\"0 mesons from He3(gammaHe3 -> pi°He 3) were measured for recoil angles of 200, 300, 400, and 500 from the direction of the incident photon. A gaseous He3 target was irradiated by 340 MeV bremsstrahlung; provided by the 'University of Illinois betatron. The He3 gas was maintained at liquid hydrogen temperature and at a pressure of slightly above one atmosphere. The recoil nuclei were observed with silicon semiconductor detectors. At least one gamma ray from the pion decay was detected with a lead glass Cherenkov counter. A coincidence between a semiconductor detector and the Cherenkov counter triggered an oscilloscope on which all pulses were then displayed and photographed. These photographs constitute the experimental data.\"","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-08T17:08:21Z No. of bitstreams: 1 1968_blecher.pdf: 2820530 bytes, checksum: 45bbd69cec9062bbc8535f2929520a2d (MD5)","Made available in DSpace on 2011-07-08T17:08:22Z (GMT). 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