Shell structures, momentum density, atoms

A fair amount of effort has been devoted to the manifestations of atomic shell structure in the momentum density and related functions [210-215]. The number of maxima observed in I p) varies from one to four, with 35 and 48 atoms exhibiting two and three local maxima [215]. No maxima in I p) corresponding to the most corelike shells are found in heavy atoms. Correlations have been found between 1 jpmax, where p ax is the location of the innermost maximum of I p), and the relative size of the atom [215]. 

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