Issue 24, 2018

Electron scattering in large water clusters from photoelectron imaging with high harmonic radiation

Abstract

Low-energy electron scattering in water clusters (H2O)n with average cluster sizes of 〈n〉 < 700 is investigated by angle-resolved photoelectron spectroscopy using high harmonic radiation at photon energies of 14.0, 20.3, and 26.5 eV for ionization from the three outermost valence orbitals. The measurements probe the evolution of the photoelectron anisotropy parameter β as a function of cluster size. A remarkably steep decrease of β with increasing cluster size is observed, which for the largest clusters reaches liquid bulk values. Detailed electron scattering calculations reveal that neither gas nor condensed phase scattering can explain the cluster data. Qualitative agreement between experiment and simulations is obtained with scattering calculations that treat cluster scattering as an intermediate case between gas and condensed phase scattering.

Graphical abstract: Electron scattering in large water clusters from photoelectron imaging with high harmonic radiation

Supplementary files

Article information

Article type
Paper
Submitted
04 apr 2018
Accepted
29 may 2018
First published
29 may 2018

Phys. Chem. Chem. Phys., 2018,20, 16364-16371

Electron scattering in large water clusters from photoelectron imaging with high harmonic radiation

T. E. Gartmann, S. Hartweg, L. Ban, E. Chasovskikh, B. L. Yoder and R. Signorell, Phys. Chem. Chem. Phys., 2018, 20, 16364 DOI: 10.1039/C8CP02148A

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