Yrast Traps and Very High-Spin Yrast States in 152Dy
Abstract
We have identified yrast states of 152Dy to spin ~37, with unusually strong population of high-spin states in the (32S, 4nγ) reaction. Yrast isomers with spins ~17, 21, 27, and 31 were detected. For I>=14 the yrast states scatter about a straight line on an E vs I(I+1) plot, consistent with predictions for aligned-particle configurations. The slope of the line yields an effective moment of inertia 18% larger than the rigid-sphere value. This and other arguments suggest possible oblate deformation at high spin.
- Publication:
-
Physical Review Letters
- Pub Date:
- October 1978
- DOI:
- 10.1103/PhysRevLett.41.1027
- Bibcode:
- 1978PhRvL..41.1027K