1. Repositório Institucional da UFMG
  2. Publicações Científicas e Culturais
  3. Artigo de Periódico
Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/57099
Full metadata record
DC FieldValueLanguage
dc.creatorCríssia Carem Paiva Fontainhapt_BR
dc.creatorNeriene Alvespt_BR
dc.creatorWilmar B. Ferrazpt_BR
dc.creatorLuiz Oliveira de Fariapt_BR
dc.date.accessioned2023-07-27T20:23:03Z-
dc.date.available2023-07-27T20:23:03Z-
dc.date.issued2018-
dc.citation.volume141pt_BR
dc.citation.spage234pt_BR
dc.citation.epage240pt_BR
dc.identifier.issn09698043pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/57099-
dc.description.resumoNew materials have been widely investigated for ionizing radiation dosimetry for medical procedures. Carbondoped alumina (α-Al2O3:C) have been reported to be excellent thermoluminescent (TL) and optically stimulatedluminescence (OSL) radiation dosimeters. In the present study, we have synthetized nano and micro-sized α Al2O3:C polycrystals, doped with different percentages of carbon atoms aiming to compare their efficiency as TL dosimeters. The dosimetric characteristics for X ray and gamma fields were investigated. Samples doped with different amounts of carbon atoms were sintered under different atmosphere conditions, at temperatures ranging from 1300 °C to 1750 °C. Among the investigated samples, the micro-sized alumina doped with 0.01% of carbon and sintered at 1700 °C under reducing atmosphere, has presented a very high TL output. The main TL peak is centered at 250 °C and has a linear behavior with photon dose in the dose range of 0.02-to-5000 mGy, with correlation coefficient very close to one (0.99991). Samples produced by using nanosized alumina have shown much lower TL output when compared to the samples with microsized alumina. The micro-sized alumina ob tained by the methodology used in this work is a suitable candidate to be explored for application in X and Gamma radiation dosimetry.pt_BR
dc.format.mimetypepdfpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentMED - DEPARTAMENTO DE ANATOMIA E IMAGEMpt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofApplied Radiation and Isotopes-
dc.rightsAcesso Restritopt_BR
dc.subjectα-Al2O3:C polycrystalpt_BR
dc.subjectThermoluminescent dosimeterspt_BR
dc.subjectRadiation detectorspt_BR
dc.subject.otherDosímetros de Radiaçãopt_BR
dc.titleVery sensitive α-Al2O3:C polycrystals for thermoluminescent dosimetrypt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S0969804317314318pt_BR
Appears in Collections:Artigo de Periódico

Files in This Item:
There are no files associated with this item.
Show simple item record


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.