9 research outputs found

    An analytic approximation to the Diffusion Coefficient for the periodic Lorentz Gas

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    An approximate stochastic model for the topological dynamics of the periodic triangular Lorentz gas is constructed. The model, together with an extremum principle, is used to find a closed form approximation to the diffusion coefficient as a function of the lattice spacing. This approximation is superior to the popular Machta and Zwanzig result and agrees well with a range of numerical estimates.Comment: 13 pages, 4 figure

    Compilation of regional to global inventories of anthropogenic emissions

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    The Chemical and Physical Properties of Marine Aerosols: An Introduction

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