Very sensitive α-Al2O3:C polycrystals for thermoluminescent dosimetry

Página do item simplificado
dc.creatorCríssia Carem Paiva Fontainha
dc.creatorNeriene Alves
dc.creatorWilmar B. Ferraz
dc.creatorLuiz Oliveira de Faria
dc.date.accessioned2023-07-27T20:23:03Z
dc.date.accessioned2025-09-08T23:15:58Z
dc.date.available2023-07-27T20:23:03Z
dc.date.issued2018
dc.format.mimetypepdf
dc.identifier.issn09698043
dc.identifier.urihttps://hdl.handle.net/1843/57099
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofApplied Radiation and Isotopes
dc.rightsAcesso Restrito
dc.subjectDosímetros de Radiação
dc.subject.otherα-Al2O3:C polycrystal
dc.subject.otherThermoluminescent dosimeters
dc.subject.otherRadiation detectors
dc.titleVery sensitive α-Al2O3:C polycrystals for thermoluminescent dosimetry
dc.typeArtigo de periódico
local.citation.epage240
local.citation.spage234
local.citation.volume141
local.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.
local.publisher.countryBrasil
local.publisher.departmentMED - DEPARTAMENTO DE ANATOMIA E IMAGEM
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0969804317314318

Arquivos

Licença do pacote

Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
License.txt
Tamanho:
1.99 KB
Formato:
Plain Text
Descrição:
Baixar

Coleções

Artigo de Periódico

Logo UFMG