Collective rotation of an oblate nucleus at very high spin
Petrache, C. M., Frauendorf, S., Lv, B. F., Astier, A., Dupont, E., Guo, S., . . . Andreoiu, C. (2019). Collective rotation of an oblate nucleus at very high spin. Physical Review C, 99 (4), 041301(R). doi:10.1103/PhysRevC.99.041301
Published inPhysical Review C
Guo, S. |
Liu, H. |
Kuti, I. |
© 2019 American Physical Society
A sequence of nine almost equidistant quadrupole transitions is observed in 137Nd. The sequence represents an extremely regular rotational band that extends to a spin of about 75/2 and an excitation energy of ≈4.5 MeV above yrast. Cranked mean-field calculations of the Nilsson-Strutinsky type suggest an oblate shape for the band. They reproduce the observed I(I + 1) dependence of the rotational energy whereas predicting a pronounced decrease in the deformation, which is the hallmark of antimagnetic rotation.