Abstract

The dynamic structure factor, S(q, omega ), for liquid sodium is investigated by means of a generalized hydrodynamic approach, using a computed fourth moment, measured values of transport coefficients (as far as possible) and the experimentally determined specific heat ratio CP/CV. This ratio has characteristically a value of 1.1 to 1.3 for liquid metals, near their melting points, and the importance of its proximity to unity in determining the shape of the dynamic structure factor is stressed, as is the need for accurate experimental results for S(q, omega ) in liquid metals.

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