%0 Journal Article
%T Shape coexistence revealed in the N = Z isotope Kr-72 through inelastic scattering
%A Wimmer, K. et al
%A Algora, A.
%A Rubio, B.
%J European Physical Journal A
%D 2020
%V 56
%N 6
%I Springer
%@ 1434-6001
%G English
%F Wimmer_etal2020
%O WOS:000540063900002
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4428), last updated on Fri, 26 Jun 2020 12:26:38 +0000
%X The N = Z = 36 nucleus Kr-72 has been studied by inelastic scattering at intermediate energies. Two targets, Be-9 and Au-197, were used to extract the nuclear deformation length, delta(N), and the reduced E2 transition probability, B(E2). The previously unknown non-yrast 2(+) and 4(+) states as well as a new candidate for the octupole 3(-) state have been observed in the scattering on the Be target and placed in the level scheme based on gamma – gamma coincidences. The second 2(+) state was also observed in the scattering on the Au target and the B(E2; 2(2)(+) -> 0(1)(+)) value could be determined for the first time. Analyzing the results in terms of a two-band mixing model shows clear evidence for a oblate-prolate shape coexistence and can be explained by a shape change from an oblate ground state to prolate deformed yrast band from the first 2+ state. This interpretation is corroborated by beyond mean field calculations using the Gogny D1S interaction.
%R 10.1140/epja/s10050-020-00171-3
%U https://arxiv.org/abs/2005.10594
%U https://doi.org/10.1140/epja/s10050-020-00171-3
%P 159 - 12pp