Thermal expansion and Grüneisen parameters in alkali metals

Thermal expansion and Grüneisen microscopic and macroscopic parameters γvk and γ(T) in the alkali metals are calculated in the pseudopotential model described earlier. γvk is proved to be sensitive to the form of the dielectric function ε(q) and of the pseupotential V(q) so that measurements of γvk may give an information on the ε(q) and V(q). γ(T) has a pronounced variation at small T. Comparison with experiment reveals a high accuracy of the description of the thermal expansion in Na and Cs with the models from [1] and in K and Rb with the models from [2]. Results for Li disagree noticeably with experiment. The sensitivity of all the results to the form of ε(q) and V(q) is discussed. [Russian Text Ignored].