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Master's Dissertation
DOI
https://doi.org/10.11606/D.11.1987.tde-20231122-100829
Document
Author
Full name
Wilson Carron
Institute/School/College
Knowledge Area
Date of Defense
Published
Piracicaba, 1987
Supervisor
Title in Portuguese
Aplicação da dosimetria termoluminescente em estudos de campos de radiação
Keywords in Portuguese
DOSIMETRIA TERMOLUMINESCENTE
FLUORETO DE LÍTIO
RADIAÇÃO GAMA
Abstract in Portuguese
Com o intuito de se difundir a técnica da dosimetria termoluminescente, foi desenvolvido um estudo para se obter as curvas de dose profunda em diferentes materiais, quando expostos a um campo de radiação gama, utilizando-se para isso dosímetros termoluminescentes de fluoreto de lítio, LiF. Fez-se um estudo do fator de conversão de dose do fluoreto de lítio para os materiais estudados de interesse agronômico: água, madeira e solo. Foram levantadas as curvas de dose absorvida em função da profundidade, para cada material e determinadas as equações de regressão que melhor se ajustam às curvas. Concluiu-se que, nos três materiais estudados, a dose de radiação absorvida apresenta uma variação acentuada com a profundidade e que podem ser correlacionadas através de uma regressão exponencial.
Title in English
Use of thermoluminescent dosimetry in gamma radiation fields studies
Abstract in English
The depth-dose curves for gamma rays in material of interest to agronomy were obtained using lithium fluoride thermoluminescent dosimeters. The dose conversion factors for LiF were determined from curves of the absorbed dose versus depth in water, wood and soil. Mathematical equations were chosen to best fit these curves. In the view of the results we came to the conclusion that in the studied materials the absorbed radiation dose presents a great variation to the depth and could be correlated through of the exponential regression.
 
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Carron-Wilson.pdf (4.60 Mbytes)
Publishing Date
2023-11-24
 
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