Multiple scattering approach to elastic low-energy electron collisions with the water dimer

Bouchiha, D.; Caron, L. G.; Gorfinkiel, J. D. and Sanche, L. (2008). Multiple scattering approach to elastic low-energy electron collisions with the water dimer. Journal of Physics B: Atomic, Molecular and Optical Physics, 41(4) 045204.

DOI: https://doi.org/10.1088/0953-4075/41/4/045204

URL: http://stacks.iop.org/0953-4075/41/045204

Abstract

Multiple scattering theory is applied to low-energy electron collisions with a complex target formed of two molecular scatterers. The total T-matrix is expressed in terms of the T-matrix for each isolated molecule. We apply the approach to elastic electron-(H2O)2 collisions. Following the method developed in our previous work on crystalline ice (Caron et al 2007 Phys. Rev. A 76 032716), we impose a cut-off on the dipole outside the R-matrix sphere and an energy-dependent cut-off on the angular momentum components of the monomer T-matrix. An R-matrix calculation of electron-dimer collisions is performed in order to evaluate the accuracy of the multiple scattering approach. The agreement between the two calculations is very good.

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