Vibrational relaxation of the H2O bending mode in liquid water
J. Chem. Phys. , Volume 121 p. 12143- 12145
We have studied the vibrational relaxation of the H2O bending mode in an H2O:HDO:D2O isotopic mixture using infrared pump-probe spectroscopy. The transient spectrum and its delay dependence reveal an anharmonic shift of 55Â±10 cm-1 for the H2O bending mode, and a value of 400Â±30 fs for its vibrational lifetime.