Charge density of 40Ca

A large number of theoretical calculations [1-8] are available for the 40Ca ground-state wavefunction. This particular attention paid to 40Ca results from the fact that it is the heaviest N=Z magic nucleus. HartreeFock (HF) calculations yield quite similar results for the density in the nuclear surface region, mainly because many of the effective nucleon-nucleon forces used have been adjusted to fit the nuclear rms-radii. Consequently, calculations differ mainly at small radii, by different amounts of structure in the charge density p (r). A number of possible physical mechanisms that influence this fine structure have been discussed in the literature [9-14].