Aplicação da dosimetria de neutrons atraves de filmes finos de uranio natural e torio na datação pelo metodo dos traços de fissão

AUTOR(ES)
DATA DE PUBLICAÇÃO

1999

RESUMO

A neutron dosimetry , which was found to be very suitable for mineral dating through the Fission Track Method (FTM), was proposed in this doctoral thesis. This dosimetry , that is based on natural uraniun and thorium thin films, allows the use of the FTM as an absolute calibration. Besides, it makes possible to obtain the Th/U ratio of the mineral to be dated. The proposed neutron dosimetry was applied to date a standard sample, yielding ages that are compatible with other dating methods

ASSUNTO(S)

uranio filmes finos radiação - dosimetria torio datação do traço de fissão

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