Competition between terminating and collective structures above spin 40 hbar in 154Dy
High-spin states in 154Dy were studied with the Gammasphere spectrometer using the 36S(122Sn,4n) reaction. Band terminating states were identified in the spin range I=(36–48)ħ, and were found to compete with collective rotational cascades up to the highest observed spins. Several “sidebands” feeding the terminating structures were identified as well. A band dominated by M1 transitions was observed