Journal
PHYSICAL REVIEW LETTERS
Volume 85, Issue 1, Pages 50-53Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.85.50
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Femtosecond midinfrared spectroscopy of water (heavy water) after two photon excitation at 9 eV provides clear evidence for two short-lived precursors of the hydrated electron preceding the well-known wet electron. The measured first intermediate with peak absorption at 2.9 (4.1) mu m is proposed to represent an O(H,D):e(-) complex. The subsequent solvation proceeds via e(-):[(H,D)(2)O](n) complexes at approximately 1.6 (2.0) mu m in the electronic ground state, involving an increasing number of water molecules during the first 200 fs and followed by the wet electron.
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