Single particle nature of the yrast line at high angular momentum in 152Dy

Abstract Linear polarization and Doppler shift recoil-distance decay curves for γ-ray transitions deexciting very high spin yrast states up to spin 36ħ in 152 Dy were measured with a delayed-promt γ-γ coincidence technique via the reactions 122 Sn ( 34 S, 4n) and 124 Sn( 32 S, 4n), at 150 MeV incident beam energy. The deduced experimental transition probabilities are consistent with those obtained for non-rotational nuclei indicating that the yrast angular momentum originates mainly from the alignment of individual particle spins.