{Fluorine depth profiling based on the 19F(p,p’$\gamma$)19F excitation function}

{Fluorine depth profiling based on the 19F(p,p’$\gamma$)19F excitation function}

Citation:: Cruz, J., M. Fonseca, D. Galaviz, A. Henriques, H. Lu{\'ıs, J. Machado, P. Teubig, P. Velho, V. Manteigas, and A. P. Jesus. "{Fluorine depth profiling based on the 19F(p,p’$\gamma$)19F excitation function}." The European Physical Journal Plus. 136 (2021): 1-12.

Abstract:

Ion beam analysis of fluorine has applications in research on teeth and bones, materials science, geochemistry and archaeometry. A novel PIGE (particle induced gamma-ray emission) standard free methodology for fluorine content determination for in-depth heterogeneous samples based on the excitation function of the 19F(p,p’$\gamma$)19F nuclear reaction is presented. New precise cross section measurements of this reaction in the proton energy range 2.1 to 4.1 MeV have been performed. In addition, the ERYA-Profiling code, a computer program specially developed for PIGE analysis of in-depth heterogeneous samples, employed this new excitation function in a case study where different fluorine simulated depth profiles probed the capability of insight into fluorine distributions in a given sample, showing the potential of PIGE analysis.

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Jorge Machado

Professor Auxiliar do Departamento de Física