The European Physical Journal D (EPJ D)

Issue		Eur. Phys. J. D Volume 54, Number 1, July 2009
Page(s)		43 - 50
Section		Atomic and Molecular Collisions
DOI		10.1140/epjd/e2009-00157-x
Published online		06 June 2009

Eur. Phys. J. D 54, 43-50 (2009)
DOI: 10.1140/epjd/e2009-00157-x

Total cross sections of electron scattering by several sulfur-containing molecules OCS, SO $_{\mathsf$ , SF $_{\mathsf$ , SF $_{\mathsf$ , SF $_{\mathsf$ CF $_{\mathsf$ , SO $_{\mathsf$ Cl $_{\mathsf$ and SO $_{\mathsf$ ClF at 30–5000 eV

D.H. Shi¹, J.F. Sun^{1, 2}, Y.F. Liu¹, Z.L. Zhu¹ and H. Ma¹

¹ College of Physics and Information Engineering, Henan Normal University, 453007 Xinxiang, P.R. China
² Department of Physics, Luoyang Normal University, 471022 Luoyang, P.R. China

scattering@sina.com.cn

Received 12 February 2009 / Received in final form 28 March 2009 / Published online 6 June 2009

Abstract
Total cross sections of electron scattering by several sulfur-containing molecules OCS, SO₂, SF₄, SF₆, SF₅CF₃, SO₂Cl₂ and SO₂ClF are calculated at the Hartree-Fork level employing 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 as the energy of incident electrons, the target's molecular dimension and the atomic and electronic numbers in the molecule. The present investigations cover the impact 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 observed even at energies of several tens of eV. It shows that the modified additivity rule approach is applicable to carry out the total cross section calculations of electron scattering by these sulfur-containing molecules at intermediate and high energies, especially over the energy range above 100 eV or so. In the present calculations, the atoms are still represented by the spherical complex optical potential, which is composed of static, exchange, polarization and absorption terms.

PACS
34.80.Bm - Elastic scattering.
34.80.-i - Electron and positron scattering .
34.10.+x - General theories and models of atomic and molecular collisions and interactions.

© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2009

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Total cross sections of electron scattering by several sulfur-containing molecules OCS, SO , SF , SF , SF CF , SO Cl and SO ClF at 30–5000 eV

Total cross sections of electron scattering by several sulfur-containing molecules OCS, SO $_{\mathsf$ , SF $_{\mathsf$ , SF $_{\mathsf$ , SF $_{\mathsf$ CF $_{\mathsf$ , SO $_{\mathsf$ Cl $_{\mathsf$ and SO $_{\mathsf$ ClF at 30–5000 eV