Abstract

Transition densities for pair-transfer modes are calculated microscopically in the vicinity of closed-shell nuclei. An RPA-like formalism is used to allow for the presence of ground-state correlations and the radial shapes of the transition densities are constructed from the resulting wavefunctions. The aim of this study is to check the validity of a macroscopic picture in which these functions are parametrized in terms of the derivative of the equilibrium density with respect to the number of particles. The structure calculations yield values for the pairing deformation parameters β p which can be compared with those extracted from DWBA analyses of two-particle transfer data.

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