J. Escher et al., PAIRING-PLUS-QUADRUPOLE MODEL AND NUCLEAR-DEFORMATION - A LOOK AT THESPIN-ORBIT INTERACTION, Nuclear physics. A, 633(4), 1998, pp. 662-680
The pairing-plus-quadrupole model, realized in the framework of the El
liott SU(3) scheme, is used to study the combined effects of the quadr
upole-quadrupole, pairing, and spin-orbit interactions on ground state
shapes of nuclear systems. Relevant measures for nuclear deformation
are reviewed. Representation mixing induced by the symmetry-breaking p
airing and spin-orbit forces is shown to soften the deformation. The a
ngular momentum dependence of the results is discussed. (C) 1998 Elsev
ier Science B.V.