{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/25555"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/25555","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Low temperature electron irradiation and annealing of pure cadmium","abstract":"\"In this study of cadmium after electron irradiation below 2°K, it has been observed that the damage production rate in Cd is (4.13 ± .16) x -26 / -2 ° 10 stcm (e /cm ) for irradiation with 2.5 MeV electrons at 1.5 K. New annealing peaks are observed at 1.825°K and at about 2°K with activation energies of (2.6 ± .1) x 10-3 eV and (2.77 ± .34) x 10-3 eV, respectively. The peak at about 2°K exhibits dose-dependence, but it is better described by first order kinetics; this peak is believed to correspond to the long- range migration of the self-interstitial, preferentially to impurities where they form clusters. It has been found that subthreshold irradiation results in the annealing of damage already present. This radiation annealing effect may be a contributing factor to the \"\"seesaw effect.\"\" Another physical process may contribute to the \"\"seesaw effect,\"\" namely, the trapping of interstitials at impurities and their subsequent detrapping during annealing.\"","abstract_html":""In this study of cadmium after electron irradiation below 2°K, it has been observed that the damage production rate in Cd is (4.13 ± .16) x -26 / -2 ° 10 stcm (e /cm ) for irradiation with 2.5 MeV electrons at 1.5 K. New annealing peaks are observed at 1.825°K and at about 2°K with activation energies of (2.6 ± .1) x 10-3 eV and (2.77 ± .34) x 10-3 eV, respectively. The peak at about 2°K exhibits dose-dependence, but it is better described by first order kinetics; this peak is believed to correspond to the long- range migration of the self-interstitial, preferentially to impurities where they form clusters. It has been found that subthreshold irradiation results in the annealing of damage already present. This radiation annealing effect may be a contributing factor to the ""seesaw effect."" Another physical process may contribute to the ""seesaw effect,"" namely, the trapping of interstitials at impurities and their subsequent detrapping during annealing."","abstract_has_math":false,"creators":["Menendez, Maria Antonia"],"institution":null,"degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Koehler, James S."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-06-28T18:16:34Z","date_published":"2011-06-28T18:16:34Z","updated_at":"2026-07-22T22:25:24Z","subjects":["activation energies","kinetics","electron irradiation","annealing","pure cadmium"],"languages":["en"],"rights":["1979 Maria Antonia Menendez"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["397546"],"render_values":[{"text":"397546","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/25555","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Koehler, James S."]},{"key":"dc:creator","label":"Author","values":["Menendez, Maria Antonia"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-06-28T18:16:34Z","10000-01-01","1979"]},{"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":["activation energies","kinetics","electron irradiation","annealing","pure cadmium"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["1979 Maria Antonia Menendez"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["397546","http://hdl.handle.net/2142/25555"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["\"In this study of cadmium after electron irradiation below 2°K, it has been observed that the damage production rate in Cd is (4.13 ± .16) x -26 / -2 ° 10 stcm (e /cm ) for irradiation with 2.5 MeV electrons at 1.5 K. New annealing peaks are observed at 1.825°K and at about 2°K with activation energies of (2.6 ± .1) x 10-3 eV and (2.77 ± .34) x 10-3 eV, respectively. The peak at about 2°K exhibits dose-dependence, but it is better described by first order kinetics; this peak is believed to correspond to the long- range migration of the self-interstitial, preferentially to impurities where they form clusters. It has been found that subthreshold irradiation results in the annealing of damage already present. This radiation annealing effect may be a contributing factor to the \"\"seesaw effect.\"\" Another physical process may contribute to the \"\"seesaw effect,\"\" namely, the trapping of interstitials at impurities and their subsequent detrapping during annealing.\"","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-28T18:16:34Z No. of bitstreams: 1 1979_menendez.pdf: 1748016 bytes, checksum: ce422a426de8c6952447fc8366567ccc (MD5)","Made available in DSpace on 2011-06-28T18:16:34Z (GMT). No. of bitstreams: 1 1979_menendez.pdf: 1748016 bytes, checksum: ce422a426de8c6952447fc8366567ccc (MD5) Previous issue date: 1979","Restriction data tranferred 2014-07-01T11:32:27-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-06-28T18:16:35Z Item is restricted indefinitely.","Thesis","U of I Only"]},{"key":"dc:title","label":"Title","values":["Low temperature electron irradiation and annealing of pure cadmium"]}]}],"canonical_facts":{"dc:contributor":["Koehler, James S."],"dc:creator":["Menendez, Maria Antonia"],"dc:date":["2011-06-28T18:16:34Z","10000-01-01","1979"],"dc:description":["\"In this study of cadmium after electron irradiation below 2°K, it has been observed that the damage production rate in Cd is (4.13 ± .16) x -26 / -2 ° 10 stcm (e /cm ) for irradiation with 2.5 MeV electrons at 1.5 K. New annealing peaks are observed at 1.825°K and at about 2°K with activation energies of (2.6 ± .1) x 10-3 eV and (2.77 ± .34) x 10-3 eV, respectively. The peak at about 2°K exhibits dose-dependence, but it is better described by first order kinetics; this peak is believed to correspond to the long- range migration of the self-interstitial, preferentially to impurities where they form clusters. It has been found that subthreshold irradiation results in the annealing of damage already present. This radiation annealing effect may be a contributing factor to the \"\"seesaw effect.\"\" Another physical process may contribute to the \"\"seesaw effect,\"\" namely, the trapping of interstitials at impurities and their subsequent detrapping during annealing.\"","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-28T18:16:34Z No. of bitstreams: 1 1979_menendez.pdf: 1748016 bytes, checksum: ce422a426de8c6952447fc8366567ccc (MD5)","Made available in DSpace on 2011-06-28T18:16:34Z (GMT). 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