Observation of intermolecular Coulombic decay in liquid water

Abstract

We report the first observation of intermolecular Coulombic decay (ICD) in liquid water following inner-valence ionization. By combining a monochromatized table-top high-harmonic source with a liquid micro-jet, we recorded electron-electron coincidence spectra at two photon energies that identify the ICD electrons, together with the photoelectrons originating from the 2a1 inner-valence band of liquid water. Our results confirm the importance of ICD as a source of low-energy electrons in bulk liquid water and provide quantitative results for modeling the velocity distribution of the slow electrons that are thought to dominate radiation damage in aqueous environments.

Accepted in PRL

References in corpus (2)

• Interatomic Coulombic Decay as a New Source of Low Energy Electrons in slow Ion-Dimer Collisions
• Interatomic Coulombic decay in helium nanodroplets

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