| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1681699 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2014 | 5 Pages |
Abstract
A sample collected from a borehole drilled approximately 10Â 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 1.25Â 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 [1,2]), on the spectra obtained in the High Resolution and High Energy (HRHE)-PIXE setup (Chaves et al., 2013 [3]) by irradiation of the sample with a 3.8Â MeV proton beam provided by the CTN 3Â 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.
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
P.C. Chaves, A. Taborda, D.P.S. de Oliveira, M.A. Reis,