Relaxation dynamics and genuine properties of the solvated electron in neutral water clusters

Abstract

We have investigated the solvation dynamics and the genuine binding energy and photoemission anisotropy of the solvated electron in neutral water clusters with a combination of time-resolved photoelectron velocity map imaging and electron scattering simulations. The dynamics was probed with a UV probe pulse following above-band-gap excitation with a EUV pump pulse. The solvation dynamics is completed within about 2 ps. Only a single band is observed in the spectra, with no indication for isomers with distinct binding energies. Data analysis with an electron scattering model reveals a genuine binding energy in the range of 3.55-3.85 eV and a genuine anisotropy parameter in the range of 0.51-0.66 for the ground-state hydrated electron. All these observations coincide with those for liquid bulk, which is rather unexpected for an average cluster size of 300 molecules.

References in corpus (4)

• Nanofocusing, shadowing, and electron mean free path in the photoemission from aerosol droplets
• Size-Resolved Photoelectron Anisotropy of Gas Phase Water Clusters and Predictions for Liquid Water
• Angle-Resolved Photoemission of Solvated Electrons in Sodium-Doped Clusters
• Geminate recombination of electrons generated by above-the-gap (12.4 eV) photoionization of liquid water

Cited by in corpus (3)

• Low-energy electron escape from liquid interfaces: charge and quantum effects
• Below band gap formation of solvated electrons in neutral water clusters?
• Can current experimental data exclude non-Gaussian genuine band shapes in ultraviolet photoelectron spectra of the hydrated electron?