Waldmann-Snider Collision Integrals for Mixtures of Polyatomic Gases Exact and Approximate Relations

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Abstract
Collision brackets of the linearized Waldmann-Snider collision superoperator are studied for mixtures of polyatomic gases. Properties following f r om symmetries of molecular interaction and collisional conservation laws are discussed. For a complete system of expansion tensors bracket symbol expressions for effective cross sections are given which generalize the Chapman-Cowling Ω-integrals. Exact relations between effective cross sections are derived. Approximate relations which hold for molecules with small nonsphericity and elastic scattering are also given

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