Abstract
bands in and , populated in spontaneous fission of and , have been studied using the Eurogam2 and Gammasphere arrays. Phenomenological classification of excited levels in even-even nuclei of the region into four categories is presented and an interpretation for each category is proposed. Highly deformed ground states and low-energy levels in both nuclei are probably due to the 2p-2h excitation of two neutrons from the extruder to the low- prolate and the oblate orbitals originating from the shell, respectively. Candidates for vibrational states in region are suggested at .
1 More- Received 23 January 2019
- Revised 29 April 2019
DOI:https://doi.org/10.1103/PhysRevC.99.064325
©2019 American Physical Society