Shell-model investigation of spectroscopic properties and collectivity in the nuclei beyond Sn132

First signs of collectivity in N = 86 and 88 isotones above 132Sn

“…Finally, we stress that the present results constitute a stringent test of N3LOP effective interaction and a benchmark for future experimental measurements. In this context our results are combined to the experimental data in the analysis of the high-spin states and the collectivity in 142 Ba and 144 Ce nuclei [19].…”

New yrast and non-yrast states in I136 and medium-spin structure of I136 and Lozeva1, Stefanova2, Naïdja3 et al. 2018Phys. Rev. CSelf Cite

“…To determine precise angular correlations for γ rays from the discussed 252 Cf fission experiment and determine multipolarities of prompt-γ transition in 136 I we used the technique of Ref. [46]. E. Measurement of γ rays following β decay of A=136 nuclei produced in neutron-induced fission of 235 U…”

“…It is adapted to the model space by means of many-body perturbation theory [59], including all theQ-box folded-diagrams up to the second order. The N3LOP effective interaction was successfully used before in describing the spectroscopic properties and collectivity of even-even chains of nuclei [46] and for oddeven and even-odd mass nuclei [60] around 132 Sn.…”

Evolution of Nuclear Shapes and Structure in Tellurium, Xenon, Barium and Cerium Isotopes

“…Chains of Te, Xe, Ba and Ce isotopes beyond N = 82 are of particular interest because they provide a natural laboratory to study shape and structural changes with gradually increasing number of nucleons outside doubly closed shells. From the theoretical point of view, the evolution of nuclear shapes and structural changes can be studied within algebraic models (IBM, algebraic collective model [4]) or in a more fundamental microscopic approach (mean field [5] or shell model [6]).…”