Theoretical and experimental investigation of electron collisions with acetone Academic Article uri icon

abstract

  • 2015 American Physical Society. 2015 American Physical Society. 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 10-120 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 Pad 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 2B2 scattering channel not clearly seen in the experimental results. Possible reasons for this fact are also discussed.

published proceedings

  • Physical Review A

author list (cited authors)

  • Homem, M., Iga, I., da Silva, L. A., Ferraz, J. R., Machado, L. E., de Souza, G., ... Lee, M.

citation count

  • 9

complete list of authors

  • Homem, MGP||Iga, I||da Silva, LA||Ferraz, JR||Machado, LE||de Souza, GLC||da Mata, VAS||Brescansin, LM||Lucchese, RR||Lee, M-T

publication date

  • September 2015