Gruneisen parameters for simple metals

Abstract
Pseudopotential theory is used to explain the dependences on temperature and the sizes of the Gruneisen parameters of some simple metals. In the absence of dependence on density in the interatomic forces, the Gruneisen constants would be higher; for the alkalis, this would amount to only a few per cent but in polyvalent metals, such as Al and Pb, it would be of the order of 50-100%.