Physics – Chemical Physics
Scientific paper
2007-06-20
Physics
Chemical Physics
10 pages + 3 figures + supplement, will be submitted shortly to Chem. Phys. Lett
Scientific paper
10.1016/j.cplett.2008.11.004
Femtosecond PTHB spectroscopy was expected to demonstrate the existence of distinct s-p absorption subbands originating from the three nondegenerate p-like excited states of hydrated electron in anisotropic solvation cavity. Yet no conclusive experimental evidence either for this subband structure or the reorientation of the cavity on the picosecond time scale has been obtained. We demonstrate that rapid reorientation of s-p transition dipole moments in response to small scale motion of water molecules is the likely culprit. The polarized bleach is shown to be too small and too short lived to be observed reliably on the sub-picosecond time scale.
Glover William J.
Larsen Ross E.
Schwartz Benjamin J.
Shkrob Ilya A.
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