Adoui, L.Cassimi, A.Gervais, B.Grandin, J.-P.Guillaume, L.Maisonny, R.Legendre, S.Tarisien, M.Lopez-Tarifa, P.Politis, M.-F.du Penhoat, M.-A. HerveVuilleumier, R.Gaigeot, M.-P.Tavernelli, I.Alcami, M.Martin, F.2010-11-302010-11-302010-11-30200910.1088/0953-4075/42/7/075101https://infoscience.epfl.ch/handle/20.500.14299/60370WOS:000264504900004We study the dissociative ionization of water clusters by impact of 12 MeV/u Ni25+ ions. Cold target recoil ion momentum spectroscopy (COLTRIMS) is used to obtain information about stability, energetics and charge mobility of the ionized water clusters. An unusual stability of the H9O4+ ion is observed, which could be the signature of the so-called Eigen structure in gas-phase water clusters. From the analysis of coincidences between charged fragments, we conclude that charge mobility is very high and is responsible for the formation of protonated water clusters, (H2O)(n)H+, that dominate the mass spectrum. These results are supported by Car-Parrinello molecular dynamics and time-dependent density functional theory simulations, which also reveal the mechanisms of such mobility.Molecule FragmentationLiquid WaterDynamicsTimePhotoionizationSpectroscopyRadiolysisExplosionImpactStatestext::journal::journal article::research article