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Odd-spin yrast states as multiple quadrupole-phonon excitations

N. Pietralla·P. von Brentano·T. Otsuka·R. F. Casten
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Abstract

The wavefunctions of the lowest odd spin positive parity yrast states in the IBA are shown to be nearly pure multiple quadrupole-phonon excitations even outside the three dynamical symmetries. The empirical data for collective nuclei with 30 < Z < 80 confirm these predictions. The quadrupole-phonon purity of the 2^+_1 state can be measured from E2-branching ratios of the 3^+_1 state. These data show a high correlation to the 2^+_1 Q-phonon purity deduced from the E2-decay of 2^+ states.

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N. Pietralla, P. von Brentano, T. Otsuka, R. F. Casten. 1998-03-27. Odd-spin yrast states as multiple quadrupole-phonon excitations. https://doi.org/10.1016/0370-2693(95)00235-d

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