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A complete numerical approach to electron–hydrogen collisions
Journal article   Open access   Peer reviewed

A complete numerical approach to electron–hydrogen collisions

P.L. Bartlett
Journal of Physics B: Atomic, Molecular and Optical Physics, Vol.39(22), pp.R379-R424
2006
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Abstract

This tutorial presents an extensive computational study of electron-impact scattering and ionization of atomic hydrogen and hydrogenic ions, through the solution of the non-relativistic Schrödinger equation in coordinate space using propagating exterior complex scaling (PECS). It details the complete numerical and computational development of the PECS method, which enables highly computationally-efficient solution of these collision systems. Benchmark results are presented for a complete range of electron-hydrogen collisions, including discrete elastic and inelastic scattering both below and above the ionization threshold energy, very low-energy ionizing collisions through to moderately high-energy ionizing collisions, ground-state and excited-state targets and charged hydrogenic targets with Z ≤ 4. Total ionization cross sections through to fully differential cross sections, both in-plane and out-of-plane, are given and are found to be in excellent accord with other state-of-the-art methods and measurements, where available. We also review our recent confirmation (Bartlett and Stelbovics 2004 Phys. Rev. Lett. 93 233201) of the Wannier and related threshold laws for e-H collisions.

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Citation topics
2 Chemistry
2.15 Physical Chemistry
2.15.664 Dissociative Electron Attachment
Web Of Science research areas
Optics
Physics, Atomic, Molecular & Chemical
ESI research areas
Physics
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