Bound dimer contribution in the collision-induced pair spectrum of mercury vapour

We present recent measurements of CILS spectra in mercury vapour, at different temperatures, in the frequency region of the dimer band (0-15 cm(-1)). The analysis of the experimental spectra, by comparison with classical calculations, including the dimers contribution, shows that such a precise measurement of the dimer band allows to discriminate between different potential models, without the necessity of modelling the pair polarizability.