Abstract

A role of the multipole interaction in the description of the ΔI = 4 staggering phenomenon is investigated in a model consisting of a single-j shell filled by identical nucleons. Exact diagonalization of the quadrupole-plus-hexadecapole Hamiltonian shows that the hexadecapole-hexadecapole interaction can produce a ΔI = 4 periodicity in the yrast sequence.

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