Resumo

LINO, J. L. S.. Electronic excitation of C₆H₆ by positron impact. Rev. mex. fis. [online]. 2021, vol.67, n.2, pp.188-192.  Epub 16-Fev-2022. ISSN 0035-001X.  https://doi.org/10.31349/revmexfis.67.188.

Experiments on the electronic excitation of molecules using positron as incident particles have shown much larger cross-sections than in the electron scattering case. The comprehension of these inelastic processes represents a great challenge and only a few studies on electronic excitation of molecules are discussed in the literature. For example, for the C6H6 molecule experimental, and theoretical calculations are not in a very advanced state, same for electron scattering case (Benzene represents the simplest aromatic hydrocarbon and a very important chemical compound due to its role as a key precursor in process pharmaceutical). Recent experiments on electronic excitation of C6H6 (1B 1u , and 1E 1u electronic states) using electron as an incident particle are available by Kato et al. (J.Chem.Phys. 134 (2011) 134308). Motivated by their experiments, we have investigated the same electronic excitation of C6H6 using positron as an incident particle. For the first time, integral cross sections in e+ - C6H6 (1B 1u , and 1E 1u electronic states) using the scaling Born positron (SBP) approach are reported. In the absence of the experimental data and theoretical developments, comparisons are made with analogous electron scattering.

Palavras-chave : Born; positron; scaling.

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