NUCLEAR DEFORMATIONS IN THE PAIRING-PLUS-QUADRUPOLE MODEL I. THE SINGLE-J SHELL

摘要

The motivation and basic assumptions of the pairing-plus-quadruple model are reviewed. Analytical and numerical appli¬cations are made to the single-;) shell, demonstrating the competition between the deforming effect of the quadruple force and the specifying effect of the pairing force. When it is deformed, the single-j shell is always axially symmetric Cases are found for which the potential energy of deformation has a spherical minimum and a deformed minimum simultaneously. The results are valid for any j. The importance of zero-point motion is stir and is found to decrease with increasing j.