학술논문
High-resolution spectroscopy of neutron-rich Br isotopes and signatures for a prolate-to-oblate shape transition at N=56
Document Type
Working Paper
Author
Dudouet, J.; Colombi, G.; Tello, D. Reygadas; Michelagnoli, C.; Dao, D. D.; Nowacki, F.; Abushawish, M.; Clément, E.; Costache, C.; Duchêne, G.; Kandzia, F.; Lemasson, A.; Marginean, N.; Marginean, R.; Mihai, C.; Pascu, S.; Rejmund, M.; Rezynkina, K.; Stezowski, O.; Turturica, A.; Ujeniuc, S.; Astier, A.; de Angelis, G.; de France, G.; Delafosse, C.; Deloncle, I.; Gadea, A.; Gottardo, A.; Jones, P.; Konstantinopoulos, T.; Kuti, I.; Blanc, F. Le; Lenzi, S. M.; Lozeva, R.; Million, B.; Pérez-Vidal, R. M.; Petrache, C. M.; Ralet, D.; Redon, N.; Schmitt, C.; Sohler, D.; Verney, D.
Source
Subject
Language
Abstract
The first systematic experimental study of the neutron-rich Br isotopes with two complementary state-of-the-art techniques is presented. These isotopes have been populated in the fission process at two different facilities, GANIL and ILL. New spectroscopic information has been obtained for odd-even $^{87-93}$Br isotopes and the experimental results have been compared with state-of-the-art Large-Scale Shell-Model and DNO Shell-Model calculations. As a result of such theoretical approaches, a transition from prolate ($^{87,89}$Br) to oblate ($^{91,93}$Br) shapes is obtained from the subtle balance between proton and neutron quadrupole deformations, as a clear signature of pseudo-SU3 quadrupole regime.
Comment: 17 pages, 24 figures, 5 tables
Comment: 17 pages, 24 figures, 5 tables