Nonharmonic vibrations transverse vibration, nonrigid dipoles

Figure 3 Contributions e" to the loss factor of water at 27°C (a, c, e) and of ice at —7°C (b, d, f) due to longitudinal harmonic vibration of a nonrigid dipole (a, b) harmonic reorientation of a permanent dipole (c, d) and nonharmonic transverse vibration of a nonrigid dipole (e, f). Symbols T and V refer, respectively, to the T- and V-bands.

The d mechanism concerns the same nonrigid 0+—H O- dipole performing a nonharmonic transverse vibration with respect to the equilibrium HB direction. 

Thin lines in Figs. 5c-h and 6c-h refer to specific contributions due to nonharmonic reorientation of a permanent dipole in the hat potential (1), harmonic longitudinal vibration of HB nonrigid dipole (2), harmonic reorientation of a permanent HB dipole (3), and nonharmonic transverse vibration of a nonrigid HB dipole (4). 

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