Abstract

The energy relaxation of the vibrational 3Σ g −(ν = 1) state and the electronic 1Δ g(ν′ = 0) state of oxygen in liquid mixtures with Ar and N 2 was investigated. The normalized electronic relaxation rate shows the same nonlinear concentration dependence as the normalized vibrational relaxation rate. The temperature dependence of the vibrational relaxation in the mixtures is essentially determined by O 2O 2 interactions. The experimental results are compared with calculations of the energy relaxation, where the liquid mixtures are described in two different ways: by a cell model and by pair distribution functions.

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