Aplicaciones de simulación por ordenador, reacciones nucleares y difusión elástica al análisis de superficies de materiales

Abstract

This article involves computer simulation and surface analysis by nuclear techniques, which are non-destructive. Both the "energy method of analysis" for nuclear reactions and elastic scattering are used. Energy spectra are computer simulated and compared with experimental data, giving target composition and concentration profile information. The method is successfully applied to thick flat targets of graphite, quartz and sapphire and targets containing thin films of aluminium oxide. Depth profiles of 12 C and 16 O nuclei are determined using (d,p) and (d,α) deuteron induced reactions. Rutherford and resonance elastic scattering of (4 He) + ions are also used.

Applications of MeV ion beams and microscopy to non-destructive surface analysis of materials

“…Nuclear techniques, which are non-destructive, provide for analysis over a few microns close to the surface giving absolute values of concentrations of isotopes and elements. Applications have been given in areas such as scientific, technologic, industry, arts and medicine, using MeV ion beams [1][2][3][4][5][6][7]. Tracing of isotopes with high sensitivities is possible by nuclear reactions.…”

“…Elastic scattering is a particular and important case. A computer program has been developed in this context, mainly for flat targets [4][5][6]. The non-flat target situation arises as an extension.…”

Applications of Nuclear Techniques, Computer Simulation and Microscopy to Surface Analysis of Materials

“…Such spectra are computationally predicted, giving target composition and concentration profile information [4][5][6][7][8]. A computer program has been developed in this context, mainly for flat targets [4][5][6][7]. The non-flat target situation arises as an extension.…”

“…Nuclear techniques, which are non-destructive, provide for analysis over a few microns close to the surface of the sample, giving absolute values of concentrations of isotopes and elements. They have been applied in areas such as scientific, technologic, industry, arts and medicine, using MeV ion beams [1][2][3][4][5][6][7]. Nuclear reactions permit tracing of isotopes with high sensitivities.…”

“…We use ion-ion nuclear reactions, elastic scattering and the energy analysis method where, at a chosen energy of the incident ion beam, an energy spectrum is recorded of ions from nuclear events, coming from several depths in the target. Such spectra are computationally predicted, giving target composition and concentration profile information [4][5][6][7][8]. A computer program has been developed in this context, mainly for flat targets [4][5][6][7].…”