Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/243081
Type: Artigo
Title: Theoretical and experimental investigation of electron collisions with acetone
Author: Homem, M. G. P.
Iga, I.
Silva, L. A. da
Ferraz, J. R.
Machado, L. E.
Souza, G. L. C. de
Mata, V. A. S. da
Brescansin, L. M.
Lucchese, R. R.
Lee, M.-T.
Abstract: We report a joint theoretical-experimental investigation on elastic electron scattering by acetone in the low-and intermediate-energy regions. More specifically, experimental differential, integral, and momentum-transfer cross sections are given in the 30-800 eV and 10 degrees-120 degrees ranges. Theoretical cross sections are reported in the 1-500 eV interval. The experimental differential cross sections were determined using a crossed electron-beam-molecular-beam geometry, whereas the absolute values of the cross sections were obtained using the relative-flow technique. Theoretically, a complex optical potential derived from a Hartree-Fock molecular wave function was used to represent the collision dynamics, and a single-center expansion method combined with the Pade approximant technique was used to solve the scattering equations. Our experimental cross-section data are in generally good agreement with the present calculated data. Also, our calculated grand-total and total absorption cross sections are in good agreement with the experimental results reported in the literature. Nevertheless, our calculations have revealed a strong shape resonance in the B-2(2) scattering channel not clearly seen in the experimental results. Possible reasons for this fact are also discussed.
We report a joint theoretical-experimental investigation on elastic electron scattering by acetone in the low-and intermediate-energy regions. More specifically, experimental differential, integral, and momentum-transfer cross sections are given in the 30-800 eV and 10 degrees-120 degrees ranges. Theoretical cross sections are reported in the 1-500 eV interval. The experimental differential cross sections were determined using a crossed electron-beam-molecular-beam geometry, whereas the absolute values of the cross sections were obtained using the relative-flow technique. Theoretically, a complex optical potential derived from a Hartree-Fock molecular wave function was used to represent the collision dynamics, and a single-center expansion method combined with the Pade approximant technique was used to solve the scattering equations. Our experimental cross-section data are in generally good agreement with the present calculated data. Also, our calculated grand-total and total absorption cross sections are in good agreement with the experimental results reported in the literature. Nevertheless, our calculations have revealed a strong shape resonance in the B-2(2) scattering channel not clearly seen in the experimental results. Possible reasons for this fact are also discussed.
Subject: Espalhamento elástico, Formaldeído, Ionização, Nitrogênio
Country: Estados Unidos
Editor: American Physical Society
Citation: Theoretical And Experimental Investigation Of Electron Collisions With Acetone. Amer Physical Soc, v. 92, p. SEP-2015.
Rights: aberto
Identifier DOI: 10.1103/PhysRevA.92.032711
Address: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.92.032711
Date Issue: 2015
Appears in Collections:IFGW - Artigos e Outros Documentos

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