| Popis: |
Ellis's method of constructing the random-phase-approximation ground-state wave function which avoids the earlier dubious and incorrect quasiboson approximation is extended to the N not-equal to Z nuclei. The most important effects arise from the appropriate treatment of the isospin quantum number. In application to the calcium isotopes we find that the calculated relative shift of the proton rms radius from /sup 40/Ca to /sup 48/Ca, R = - 0.35%, for the first time agrees with the high-energy electron scattering result, R = - 0.31%. Excellent agreement is also obtained for the difference of the neutron and proton rms radii in /sup 48/Ca. It should be emphasized, however, that our conclusions concerning the magnitude of the effects on the rms radii due to ground-state correlations are more significant than the detailed comparison with experiment. (AIP) |
