Abstract
The penetration of molecules at thermal energies into target gases is examined with Monte Carlo techniques applied to successive collisions of projectile and target molecules. Calculations are reported for hard-sphere, inverse-12th, and inverse-6th repulsive interaction potentials under conditions relevant to low density gas flows in which range effects are important. Effects of molecular weight ratio, entering velocity, and target gas temperature on range distributions are determined systematically. Results are applicable in the study of a number of phenomena occurring in low density gas flows. Application of the techniques developed to prediction of diffusion coefficients for dilute gas mixtures is also demonstrated.
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