Yrast bands in 176 Pt(N=98) and 178 Pt have been identified. The level scheme of 176 Pt changes from a quasi-vibrational pattern to that of a well deformed rotor, at very low spins, a behaviour similar to that attributed to shape coexistence in the light Hg isotopes. Analysis of The 176-188 Pt yrast bands supports a shape coexistence interpretation, the excitation energy of the intruder state behaving as predicted by Wood, (1981).
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Dracoulis et al. (1986) studied this question.
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