To the Problem of the Water Transparency Bandwidth (1.8–11.2 eV) and Hydrogen Bonds

Abstract

It is experimentally detected the gravity center of theOHband of Raman scattering (RS) of picosecond pulses in water shifts by ~40 cm⁻¹ (~0.005 eV) to the high-frequency wing due to shortening the time of observation of the hydrogen bond restructuring in comparison with RS of nanosecond pulses. It was shown that declarative negation of hydrogen bonds and the introduction of the water transparency window half-width (5 eV) or (11.2 eV as seen in Fig. 1 of the paper by V. G. Artemov [Bulletin of the Lebedev Physics Institute 42, 187-191 (2015)] should be regarded as incorrect. These values multiply exceed the well known half-width in the range of 650–360 nm (~1.8 eV [1] which is defined by the fundamental absorption region and OH stretching vibration band overtones from the side of UV and IR regions, respectively.