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|Título:||CdTe detector based PIXE mapping of geological samples|
|Autor:||Chaves, P. C.|
Oliveira, Daniel P. S.
Reis, M. A.
|Palavras-chave:||Amostras de rochas|
Análise de amostras
|Citação:||Chaves, P. C.; Taborda, A.; Oliveira, D. P. S. de; Reis, M. A. - CdTe detector based PIXE mapping of geological samples. In: Nuclear Instruments and Methods in Physics Research B, Vol. 318, Part A, 1 January 2014, p. 37-41|
|Resumo:||A sample collected from a borehole drilled approximately 10 km ESE of Bragança, Trás-os-Montes, was analysed by standard and high energy PIXE at both CTN (previous ITN) PIXE setups. The sample is a fine-grained metapyroxenite grading to coarse-grained in the base with disseminated sulphides and fine veinlets of pyrrhotite and pyrite. Matrix composition was obtained at the standard PIXE setup using a 1.25 MeV H+ beam at three different spots. Medium and high Z elemental concentrations were then determined using the DT2fit and DT2simul codes (Reis et al., 2008, 2013  and ), on the spectra obtained in the High Resolution and High Energy (HRHE)-PIXE setup (Chaves et al., 2013 ) by irradiation of the sample with a 3.8 MeV proton beam provided by the CTN 3 MV Tandetron accelerator. In this paper we present results, discuss detection limits of the method and the added value of the use of the CdTe detector in this context.|
|Aparece nas colecções:||RM - Artigos em revistas internacionais|
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