Raman spectrum permittivity

F. Additional Condition to Overall Permittivity Provided by Low-Frequency Raman Spectrum... 

In this section we calculate the water spectrum in the range 0-1000 cm-1. This calculation is based on an analytical theory elaborated in 2005-2006 with the addition of a new criterion (38), related to the 50-cm 1 band in the low-frequency Raman spectrum. The calculation scheme was briefly described in Section II. One of our goals is to compare the spectra of liquid H20 and D20 and the relevant parameters of the model. Particularly, we consider the isotopic shift of the complex permittivity/absorption spectra and the terahertz (THz) spectra of both fluids. Additionally, in Appendix II we take into account the coupling of two modes, pertinent to elastically vibrating HB molecules. 

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