Hydrated-electron population dynamics

Abstract A detailed frequency-resolved pump–probe study of hydrated electron dynamics, performed with 5-fs pulses, is presented. We show that the experimental data can be successfully described with a model in which the excited state lifetime is ∼50 fs in regular water and ∼70 fs in heavy water. The deuteration effect on the lifetime strongly suggests that OH-vibrational modes in the first solvation shell act as accepting modes for energy relaxation.

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