skip to main content
Visitante
Meu Espaço
Minha Conta
Sair
Identificação
This feature requires javascript
Tags
Revistas Eletrônicas (eJournals)
Livros Eletrônicos (eBooks)
Bases de Dados
Bibliotecas USP
Ajuda
Ajuda
Idioma:
Inglês
Espanhol
Português
This feature required javascript
This feature requires javascript
Primo Search
Busca Geral
Busca Geral
Acervo Físico
Acervo Físico
Produção Intelectual da USP
Produção USP
Search For:
Clear Search Box
Search in:
Busca Geral
Or hit Enter to replace search target
Or select another collection:
Search in:
Busca Geral
Busca Avançada
Busca por Índices
This feature requires javascript
This feature requires javascript
Tungsten gallium-phosphate glasses for high energy radiation detection
Lodi, Thiago Augusto
Biblioteca Digital de Teses e Dissertações da USP; Universidade de São Paulo; Escola de Engenharia de São Carlos 2022-10-03
Acesso online
Exibir Online
Detalhes
Resenhas & Tags
Mais Opções
This feature requires javascript
Enviar para
Adicionar ao Meu Espaço
Remover do Meu Espaço
E-mail (máximo 30 registros por vez)
Imprimir
Link permanente
Referência
EasyBib
EndNote
RefWorks
del.icio.us
Exportar RIS
Exportar BibTeX
This feature requires javascript
Título:
Tungsten gallium-phosphate glasses for high energy radiation detection
Autor:
Lodi, Thiago Augusto
Orientador:
Bernardez, Andréa Simone Stucchi de Camargo Alvarez
Assuntos:
Vidros Gálio-Fosfato
;
Cintiladores
;
Emissão De Banda Larga
;
Tungstênio
;
Tb3+
;
Tungsten
;
Scintillators
;
Gallium Phosphate Glasses
;
Broadband Emission
Notas:
Tese (Doutorado)
Descrição:
Scintillators are materials that convert a single photon of high-energy ionizing radiation, like X-rays, γ-rays, neutrons, α and β particles, into UV-visible photons. Scintillation detectors, which usually consist of a scintillator and photodetector, have played an important role in radiation detection applications, such as in industrial and medical imaging, homeland security and high energy physics experiments. In order to be used as a scintillator, a material must contain luminescent centers which are either extrinsic, when doped with active ions such as the trivalent rare-earth ions, or intrinsic, when the emission originates from molecular centers or lattice defects. Typically, scintillators are inorganic single-crystals due to their high density and excellent emission efficiency. However, the synthesis of these materials, in limited sizes and shapes is extremely costly and time-consuming, hindering industrial production in large market scale. Alternatively, lower-cost materials which offer larger possibilities of shaping, such as glasses, have been investigated this application. Glass is an extremely versatile material that in general provides cost-effective, large-scale production, being easily processed into complex geometries, including special optical fibers. This doctorate project was focused on the development of glasses in the compositional system NaPO3-Ga2O3-Na2WO4 and their detailed characterization from the thermal, structural, spectroscopic and optical viewpoints, in view of their promising application as scintillators. The glasses were obtained with excellent optical quality, very good chemical and thermal stability, and they were characterized by Differential Scanning Calorimetry (DSC), volumetric density measurements, X-ray diffraction, Raman spectroscopy, Nuclear Magnetic Resonance (NMR), Fourier Transform Infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), UV-vis absorption, photoluminescence (emission and excitation) and radioluminescence. The robustness of the materials associated to its optimum spectroscopic, optical and radioluminescent response indicate that they are promising materials for scintillating devices, worth of further investigation and developments.
DOI:
10.11606/T.18.2022.tde-25012023-120919
Editor:
Biblioteca Digital de Teses e Dissertações da USP; Universidade de São Paulo; Escola de Engenharia de São Carlos
Data de criação/publicação:
2022-10-03
Formato:
Adobe PDF
Idioma:
Inglês
Links
Este item no Dedalus
Teses e Dissertações USP
Acesso ao doi
This feature requires javascript
This feature requires javascript
Voltar para lista de resultados
This feature requires javascript
This feature requires javascript
Buscando em bases de dados remotas. Favor aguardar.
Buscando por
em
scope:(USP_VIDEOS),scope:("PRIMO"),scope:(USP_FISICO),scope:(USP_EREVISTAS),scope:(USP),scope:(USP_EBOOKS),scope:(USP_PRODUCAO),primo_central_multiple_fe
Mostrar o que foi encontrado até o momento
This feature requires javascript
This feature requires javascript