Abstract
Abstract Collision-induced light scattering spectra of phosphorus vapour measured at 1000 K and density 132 mol m −3 are used to deduce a Lennard–Jones type (15-6) intermolecular interaction potential U ( R ), the dipole–quadrupole polarizability A , and dipole–octopole polarizability E of P 4 clusters. Using a recent experimental value of the dipole–dipole polarizability α 0 =14.42×10 −30 m 3 at λ =514.5 nm, the experimentally recorded depolarized interaction-induced Raman spectra are best fitted with σ =4.4×10 −10 m, ϵ / k =700 K, A =(6±2)×10 −40 m 4 , and | E |=(127±17)×10 −50 m 5 . The analysis is hampered by the existence of the ν 3 – ν 2 vibrational combination band at 98 cm −1 .
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