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Título: | Elastic and electronically inelastic scattering of electrons by the pyrazine molecule |
Autor: | Silva, Murilo O.; Moreira, Giseli M.; Rosado, Jaime; Blanco, Francisco ; García, Gustavo CSIC ORCID; Bettega, Márcio H. F.; da Costa, Romarly F. | Fecha de publicación: | 21-nov-2023 | Editor: | Royal Society of Chemistry (UK) | Citación: | Physical Chemistry Chemical Physics 26: 7276-7286 (2024) | Resumen: | We report on elastic and electronically inelastic integral and differential cross sections as well as ionization and total cross sections for electron collisions with the pyrazine molecule. The Schwinger multichannel method is applied in calculations carried out according to the minimal orbital basis for single configuration interactions strategy from the 1-channel up to 139-channels close-coupling level of approximation. With these calculations we have obtained integral and differential cross sections as well as excitation functions for elastic electron scattering and, also, integral and differential cross sections for electronic excitation from the ground state to the 3B1u, 3B2u, 3B3u, 1B1u, 1B2u and 1B3u excited states of pyrazine by electron impact. By summing the total ionization cross section obtained by means of the binary-encounter-Bethe model to these elastic and electronically inelastic contributions, we provided an estimate for the total cross section describing the electron-pyrazine interaction process. The independent atom model with the screening-corrected additivity rule plus interference terms method was also used in the present study to determine elastic integral and differential as well as ionization and total cross sections for electron collisions from pyrazine. The present results were, whenever possible, critically compared to the experimental and theoretical data available in the literature. In general, the overall agreement between the present results and the experiment is quite encouraging. | Descripción: | 11 pags., 10 figs., 4 tabs. | Versión del editor: | https://doi.org/10.1039/D3CP04619B | URI: | http://hdl.handle.net/10261/355875 | DOI: | 10.1039/d3cp04619b | ISSN: | 1463-9076 |
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