2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/192380The effect of an axially symmetric hexadecapole term is investigated in a strongly deformed quadrupole potential. While the system is nonintegrable and shows significant chaotic behaviour classically, the quantum mechanical treatment not only produces a general smoothing effect with regard to chaos but even yields a pronounced shell structure at certain hexadecapole strength parameter values for oblate and prolate deformation.RevTeX + 4 figs. available from the authors, to appear in Phys.Rev.CNuclear Theorytext