Spectrum of OH-stretching vibrations of water in a “floating” water bridge

The axial distribution (over the cross section) of the spectra of the $\mathrm {OH}$-stretching band of water in a water bridge is investigated using the Raman scattering method. It is found that the axial structure of the bridge is inhomogeneous: the core at the center of the bridge contains a larger amount of water with an “icelike” structure and a presumably larger number of $\mathrm H^+$ ions, while the outer layer probably consists of water with a larger number of $\mathrm {OH}^-$ ions.