A low frequency study (Fabry–Perot) of the polarized and depolarized light scattering spectra of liquid pentachlorobiphenyl is presented from −54 to +150 °C.The relaxation time deduced from the depolarized spectra is measured as a function of temperature and compared with the time obtained by means of other techniques.The weak propagative depolarized doublet is studied at high viscosity, from −54 to +42 °C. The value of the shear rigidity modulus Gx is obtained almost up to the relaxation domain.The Brillouin polarized doublet is also analyzed in the full temperature range and the values of the compressional moduli are calculated.
Polarized and depolarized interaction-induced light scattering spectra at room temperature (294.5±1) K have been used for deriving the empirical multiparameter Morse–Morse–Morse–spline–van der Waals interatomic potential. These new data of scattering are accurate enough to permit for the first time a reliable determination of the interatomic potential of the gaseous helium as a function of the interatomic separation. The potential parameters describing the location and depth of the attractive well are given by ε = 11.2±0.015 K,
Inelastic light scattering by intrasubband spin-density excitations in GaAs-AlGaAs quantum wells with balanced Bychkov-Rashba and Dresselhaus spin-orbit interaction: Quantitative determination of the spin-orbit field