Waldmann-Snider Collision Intergrals for Mixtures of Polyatomic Gases. Exact and Approximate Relations
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
- Publication:
-
Zeitschrift Naturforschung Teil A
- Pub Date:
- November 1979
- DOI:
- 10.1515/zna-1979-1101
- Bibcode:
- 1979ZNatA..34.1255K
- Keywords:
-
- Gas Mixtures;
- Molecular Collisions;
- Polyatomic Gases;
- Scattering Cross Sections;
- Approximation;
- Conservation Laws;
- Elastic Scattering;
- Scattering Amplitude;
- Atomic and Molecular Physics