Abstract
We report a theoretical–experimental investigation on elastic electron scattering by acetaldehyde (CH\(_3\)CHO) in the 0.5–800 eV energy range. Theoretically, the Padé approximation and the single-center partial-wave expansion method were applied to solve the Lippmann–Schwinger scattering equation, whereas a molecular complex optical potential was used to describe the electron–molecule interaction. Calculations in the independent-atom framework were also performed. Angular distributions of the elastically scattered electrons were measured in the 10\(^{\circ }\)–130\(^{\circ }\) and 30–800 eV ranges using a crossed beams geometry. Absolute values of differential cross sections were derived by the relative flow technique. In addition, integral and momentum transfer cross sections were obtained from the experimental and theoretical differential cross sections via a numerical integration procedure. Comparison between our results and previous experimental and theoretical calculations is made.
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Data Availability Statement
This manuscript has no associated data or the data will not be deposited. [Authors’ comment: The datasets generated during the current study are available from the corresponding author on reasonable request.]
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Acknowledgements
We dedicate this work to the Memory of Professor Vincent McKoy of Caltech and also to Professor Eduardo Motta Alves Peixoto of Universidade de São Paulo, who both contributed significantly to the development of the electron scattering research at UFSCar, Brazil. This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brazil (CAPES) - Finance Code 001, Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) - Grant no. 2015/08258-2, and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) - Grant no. 311152/2016-3.
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da Silva, L.A., Ferraz, J.R., Homem, M.G.P. et al. Elastic and absorption electron collisions with acetaldehyde. Eur. Phys. J. D 75, 279 (2021). https://doi.org/10.1140/epjd/s10053-021-00289-z
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DOI: https://doi.org/10.1140/epjd/s10053-021-00289-z