Eur. Phys. J. D (2012) 66: 3
https://doi.org/10.1140/epjd/e2011-20244-7

Regular Article

Studies on the vibrational excitation differential cross sections of non-resonant e-N₂ scattering using augmented polarization potentials

¹ Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, Sichuan, 610065, P.R. China
² School of Physics and Chemistry and Research Center for Advanced Computation, Xihua University, 610039 Chengdu, Sichuan, P.R. China

^a e-mail realblackwisen@gmail.com

Received: 29 April 2011
Received in final form: 13 July 2011
Published online: 11 January 2012

Abstract

Distributed spherical Gaussian (DSG) correlation-polarization model potentials with higher-order terms and exact exchange effects in single-configuration Slater determinant are taken into account for low-energy vibrational excitation e-N₂ scattering system. The integrodifferential coupled channel equations are solved using a combination of linear-algebraic and R-matrix-propagator algorithms. Analytic Born completion is used to calculate high-order scattering matrix elements in order to obtain convergent differential cross sections. The energy range is set to 4−15 eV which is not tested by the present theoretical method before. The overall agreement of theoretical results with the latest experiments emphasizes the importance of higher-order correlation-polarization potentials and rigorous exchange effects in vibrational excitation scattering.