{"id":{"repo_id":"wku-diss","oai_identifier":"oai:digitalcommons.wku.edu:theses-2042"},"canonical_url":"https://search.dev.ndltd.org/etd/wku-diss/oai:digitalcommons.wku.edu:theses-2042","repository":{"repo_id":"wku-diss","name":"Western Kentucky University","base_url":"https://digitalcommons.wku.edu/do/oai/"},"display":{"title":"Ultraviolet Stimulated Thermoluminescent Response Characteristics of Aluminum Oxide","abstract":"This investigation has demonstrated that some aluminum oxide crystals have high sensitivity and are well suited for detecting and measuring ultraviolet radiation rates significantly less than 0.1 pW/cm2. The thermoluminescent glow curve, linearity of response, and fading of the crystals were determined. An action spectrum was performed to determine the relative sensitivities of several crystals in a range of wavelengths from 230 nm to 546 nm. The sensitivity of the crystals was found to decrease as a function of exposure. An explanation for the decrease in sensitivity due to the presence of high temperature traps is presented. This investigation has demonstrated that certain aluminum oxide crystals exhibit ultraviolet response characteristics necessary to meet the criteria set forth by the Occupational Safety and Health Administration for the detection and measurement of low levels of ultraviolet radiation.","abstract_html":"This investigation has demonstrated that some aluminum oxide crystals have high sensitivity and are well suited for detecting and measuring ultraviolet radiation rates significantly less than 0.1 pW/cm2. The thermoluminescent glow curve, linearity of response, and fading of the crystals were determined. An action spectrum was performed to determine the relative sensitivities of several crystals in a range of wavelengths from 230 nm to 546 nm. The sensitivity of the crystals was found to decrease as a function of exposure. An explanation for the decrease in sensitivity due to the presence of high temperature traps is presented. This investigation has demonstrated that certain aluminum oxide crystals exhibit ultraviolet response characteristics necessary to meet the criteria set forth by the Occupational Safety and Health Administration for the detection and measurement of low levels of ultraviolet radiation.","abstract_has_math":false,"creators":["Ryan, Edward"],"institution":null,"degree_name":"Master of Science","degree_level":null,"degree_discipline":"Department of Physics and Astronomy","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1976,"date_issued":"1976-12-01T08:00:00Z","date_published":"1976-12-01T08:00:00Z","updated_at":"2026-07-24T06:08:02Z","subjects":["Physics"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://digitalcommons.wku.edu/theses/1039","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Ryan, Edward"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Department of Physics and Astronomy"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Physics"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://digitalcommons.wku.edu/theses/1039"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This investigation has demonstrated that some aluminum oxide crystals have high sensitivity and are well suited for detecting and measuring ultraviolet radiation rates significantly less than 0.1 pW/cm2. The thermoluminescent glow curve, linearity of response, and fading of the crystals were determined. An action spectrum was performed to determine the relative sensitivities of several crystals in a range of wavelengths from 230 nm to 546 nm. The sensitivity of the crystals was found to decrease as a function of exposure. An explanation for the decrease in sensitivity due to the presence of high temperature traps is presented. This investigation has demonstrated that certain aluminum oxide crystals exhibit ultraviolet response characteristics necessary to meet the criteria set forth by the Occupational Safety and Health Administration for the detection and measurement of low levels of ultraviolet radiation."]},{"key":"dc:title","label":"Title","values":["Ultraviolet Stimulated Thermoluminescent Response Characteristics of Aluminum Oxide"]}]}],"canonical_facts":{"dc:creator":["Ryan, Edward"],"dc:description.abstract":["This investigation has demonstrated that some aluminum oxide crystals have high sensitivity and are well suited for detecting and measuring ultraviolet radiation rates significantly less than 0.1 pW/cm2. The thermoluminescent glow curve, linearity of response, and fading of the crystals were determined. An action spectrum was performed to determine the relative sensitivities of several crystals in a range of wavelengths from 230 nm to 546 nm. The sensitivity of the crystals was found to decrease as a function of exposure. An explanation for the decrease in sensitivity due to the presence of high temperature traps is presented. This investigation has demonstrated that certain aluminum oxide crystals exhibit ultraviolet response characteristics necessary to meet the criteria set forth by the Occupational Safety and Health Administration for the detection and measurement of low levels of ultraviolet radiation."],"dc:identifier":["https://digitalcommons.wku.edu/theses/1039"],"dc:subject":["Physics"],"dc:title":["Ultraviolet Stimulated Thermoluminescent Response Characteristics of Aluminum Oxide"],"dc:type":["Thesis"],"thesis:degree_discipline":["Department of Physics and Astronomy"],"thesis:degree_name":["Master of Science"]},"updated_at":"2026-07-24T06:08:02Z"}