Angle-Resolved Electron Scattering from H2 O near 0°

R. Kadokura, A. Loreti, Kövér, A. Faure, J. Tennyson, G. Laricchia

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An electron beam, characterized by a high-angular discrimination (≃0.7°), has been used to measure the total (elastic plus inelastic) cross section of H2O in the energy range 3-100 eV. Broad coincidence is found with recent experiments, including a pronounced shoulder in the 6-12 eV region. However, at energies 6 eV, the present cross sections are ≃30% higher. Furthermore, forward scattering has been probed in the angular range 0°-3.5° and measures of the average (rotationally and vibrationally summed) differential elastic cross sections for incident energies ≤12 eV are obtained at a scattering angle ≃1. The measurements, which provide the first test of theoretical predictions in an angular region experimentally unexplored until now, are found to be within 1 standard deviation of corresponding ab initio R-matrix calculations.

Original languageEnglish
Article number033401
JournalPhysical review letters
Issue number3
Publication statusPublished - Jul 16 2019

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Kadokura, R., Loreti, A., Kövér, Faure, A., Tennyson, J., & Laricchia, G. (2019). Angle-Resolved Electron Scattering from H2 O near 0°. Physical review letters, 123(3), [033401].