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Type: Artigo de periódico
Title: Absorption effects for electron-molecule collisions
Author: Castro, EAY
de Souza, GLC
Iga, I
Machado, LE
Brescansin, LM
Lee, MT
Abstract: In a recent work, we have proposed an empirical scaling factor to the quasi-free scattering model absorption potential of Staszewska et al., in order to account for many-body interactions in the electron-molecule scattering problem. In this work we extend the application of this modified potential to the study of electron collisions with three molecular targets of different geometric arrangements: linear (CO), angular (H2O), and tetrahedral (CH4), in a wide energy range. The calculations were performed using the same scaling factor without any additional adjustment. We have observed a significant improvement in the agreement between the calculated results and the experimental data available in the literature, in comparison with that of the calculated results without the scaling factor. Also, this study reinforces the fact that the proposed correction factor is independent of targets and therefore can be used for predictive purposes for a general target. (c) 2007 Elsevier B.V. All rights reserved.
Subject: electron-molecule collisions
absorption effects
cross sections
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/j.elspec.2007.03.005
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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