{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/71041"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/71041","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"A fast neutron spectrometer","abstract":"A fast neutron spectrometer was designed and constructed using a proton-recoil telescope. Recoil protons from a thin foil of polyethylene were detected with a silicon surface-barrier diode. The output pulse from the detector is proportional to the energy of the protons and hence the energy of the incident neutrons. The spectrometer was used to obtain pulse height spectra from various sources of fast neutrons including the V.P.I. reactor and the d-d reaction using the Cockroft-Walton accelerator. Results obtained indicate that for high intensity sources the spectrometer is capable of providing high resolution energy spectra although modification is necessary in some cases to reduce background. The compactness of the instrument and its simplicity make it ideal for investigating sources that are not readily amenable to other techniques.","abstract_html":"A fast neutron spectrometer was designed and constructed using a proton-recoil telescope. Recoil protons from a thin foil of polyethylene were detected with a silicon surface-barrier diode. The output pulse from the detector is proportional to the energy of the protons and hence the energy of the incident neutrons. The spectrometer was used to obtain pulse height spectra from various sources of fast neutrons including the V.P.I. reactor and the d-d reaction using the Cockroft-Walton accelerator. Results obtained indicate that for high intensity sources the spectrometer is capable of providing high resolution energy spectra although modification is necessary in some cases to reduce background. The compactness of the instrument and its simplicity make it ideal for investigating sources that are not readily amenable to other techniques.","abstract_has_math":false,"creators":["Carpenter, William B."],"institution":"Virginia Polytechnic Institute","degree_name":"Master of Science","degree_level":"masters","degree_discipline":"Nuclear Science and Engineering","degree_department":"Nuclear Science and Engineering","school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1962,"date_issued":"1962","date_published":"1962","updated_at":"2026-07-22T22:19:01Z","subjects":[],"languages":["en_US"],"rights":["In Copyright"],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/10919/71041","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.department","label":"Department","values":["Nuclear Science and Engineering"]},{"key":"dc:creator","label":"Author","values":["Carpenter, William B."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2016-05-23T14:57:23Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2016-05-23T14:57:23Z"]},{"key":"dc:date.issued","label":"Date","values":["1962"]},{"key":"dc:publisher","label":"Institution","values":["Virginia Polytechnic Institute"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.dcmitype","label":"Dc Type Dcmitype","values":["Text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Nuclear Science and Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Virginia Polytechnic Institute"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en_US"]},{"key":"dc:rights","label":"Dc Rights","values":["In Copyright"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10919/71041"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["A fast neutron spectrometer was designed and constructed using a proton-recoil telescope. Recoil protons from a thin foil of polyethylene were detected with a silicon surface-barrier diode. The output pulse from the detector is proportional to the energy of the protons and hence the energy of the incident neutrons. The spectrometer was used to obtain pulse height spectra from various sources of fast neutrons including the V.P.I. reactor and the d-d reaction using the Cockroft-Walton accelerator. Results obtained indicate that for high intensity sources the spectrometer is capable of providing high resolution energy spectra although modification is necessary in some cases to reduce background. The compactness of the instrument and its simplicity make it ideal for investigating sources that are not readily amenable to other techniques."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Master of Science"]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["A fast neutron spectrometer"]}]}],"canonical_facts":{"dc:contributor.department":["Nuclear Science and Engineering"],"dc:creator":["Carpenter, William B."],"dc:date.accessioned":["2016-05-23T14:57:23Z"],"dc:date.available":["2016-05-23T14:57:23Z"],"dc:date.issued":["1962"],"dc:description.abstract":["A fast neutron spectrometer was designed and constructed using a proton-recoil telescope. Recoil protons from a thin foil of polyethylene were detected with a silicon surface-barrier diode. The output pulse from the detector is proportional to the energy of the protons and hence the energy of the incident neutrons. The spectrometer was used to obtain pulse height spectra from various sources of fast neutrons including the V.P.I. reactor and the d-d reaction using the Cockroft-Walton accelerator. Results obtained indicate that for high intensity sources the spectrometer is capable of providing high resolution energy spectra although modification is necessary in some cases to reduce background. 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