Relative spins and excitation energies of superdeformed bands inHg190: Further evidence for octupole vibration

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ar X iv : n uc l - ex / 9 41 20 04 v 1 2 9 D ec 1 99 4 Relative spins and excitation energies of superdeformed bands in 190 Hg : Further evidence for octupole vibration

An experiment using the Eurogam Phase II gamma-ray spectrometer confirms the existence of an excited superdeformed (SD) band in 190 Hg and its very unusual decay into the lowest SD band over 3-4 transitions. The energies and dipole character of the transitions linking the two SD bands have been firmly established. Comparisons with RPA calculations indicate that the excited SD band can be interp...

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The origin of the ∆I=4 staggering effect which has recently been observed in several su-perdeformed bands is discussed. The Hamamoto and Mottelson model, which is based on a phenomenological parametrization of the hamiltonian as a quartic function of angular momentum , is analyzed. A stability of the description with respect to the C 4-symmetry breaking terms is studied. Recently, a puzzling ne...

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ژورنال

عنوان ژورنال: Physical Review C

سال: 1995

ISSN: 0556-2813,1089-490X

DOI: 10.1103/physrevc.51.r1599