Shifted Identical Bands from pt to Pb

From the Brookhaven and Lawrence Berkeley National Laboratory Data Retrieval websites, we present new insights into shape coexistence in the Pt to Pb region. The phenomenon of shifted identical bands is now found in proton-rich nuclei in the Pt to Pb region. Shifted identical bands are bands of two neighboring nuclei differing by 2n, 2p, α, n, p, and other combinations, where the transition energies in the bands differ by the same constant fraction over a range of spins. Identical bands and SIBs are found above spins of 6⁺ in even-even nuclei or equivalent in odd-A nuclei, where the well-deformed structures become yrast with little mixing between the shape-coexisting structures. As an example, E_γ(¹⁸⁰Hg) = 1-0.022(⁺³_-1)E_γ(¹⁸²Hg) from 6⁺ to 16⁺.