The static structure factor S(q) of liquid germanium is determined at 1123K by neutron diffraction techniques in the range from 0.4 to 8.5 AA-1. The structure factor shows a clear low-lying shoulder on the high side of the scattering angle, near the first peak of S(q). These two peaks indicate a dual structure of the germanium melt. The first one characterises the short-range order and the 'irregular' one is associated with a certain degeneracy of the atomic states of the liquid around the imperfections of the structure, which appear as single vacancies.
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Davidović et al. (1983) studied this question.
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