Eur. Phys. J. D 49, 51-57 (2008)
https://doi.org/10.1140/epjd/e2008-00130-3

Total cross sections of electron scattering by C₄H₈O, C₅H₁₀O₂, C₆H₅F, C₆H₅Cl, C₆F₅Cl, C₆H₄(CHO)F and C₄H₈O₂ at 30–5000 eV

¹ College of Physics and Information Engineering, Henan Normal University, Xinxiang 453 007, P.R. China
² College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464 000, P.R. China

Corresponding author: ^a scattering@sina.com.cn

Received: 22 April 2008
Revised: 25 May 2008
Published online: 2 July 2008

Abstract

Total cross sections for electron scattering by large molecules C₄H₈O, C₅H₁₀O₂, C₆H₅F, C₆H₅Cl, C₆F₅Cl, C₆H₄(CHO)F and C₄H₈O₂ are calculated at the Hartree-Fork level using the modified additivity rule approach. The modified additivity rule approach, which was proposed by Shi et al. [Eur. Phys. J. D 45, 253 (2007); Nucl. Instrum. Meth. B 254, 205 (2007)], takes into consideration that the contributions of the geometric shielding effect vary with the energy of the incident electrons, the target's molecular dimension and the atomic and electronic numbers of the molecule. The present calculations cover the collision energies ranging from 30 to 5000 eV. The quantitative total cross sections are compared with those obtained by experiments and other theories. Good agreement is obtained even at energies of several tens of eV. It shows that the modified additivity rule approach is applicable to calculate the total cross sections of electron scattering by so large molecules at intermediate and high energies, especially above 100 eV. The total cross sections for electron scattering by the C₄H₈O₂ molecule are predicted although no experimental and theoretical data are available for comparison over the present energy region.