The effect of a hexadecapole term of the residual interaction in even deformed nuclei

Abstract

To explain some experimental properties of even deformed nuclei a two-separable component force is needed. Instead of using the sophisticated forces generally introduced in the literature, we simply take into account the hexadecapole term of the multipole expansion of the residual interaction. Using then simple R.P.A. technics we are able to explain a second 0+ state below the gap. The rather weakB(E2) values from the first excited 0+ state to members of the ground state band in the middle of the rare earth region are also well described.