%0 Journal Article
%A Fraile Prieto, Luis Mario
%A Paziy, Vadym
%A otros, ...
%T Low-Z boundary of the N=88-90 shape phase transition: Ce-148 near the critical point
%D 2020
%@ 2469-9985
%U https://hdl.handle.net/20.500.14352/6099
%X Excited states of the neutron-rich nucleus Ce-148 have been populated by neutron-induced fission of a U-235 target. Its electromagnetic decays were studied by means of gamma-ray coincidence spectroscopy with fast-timing capabilities. Lifetimes of the 2(1)(+) and 4(1)(+) states of Ce-148 were obtained and their E2 decay rates deduced. The B-4/2 = B(E2; 4(1)(+) -> 2(1)(+))/B(E2; 2(1)(+) -> 0(1)(+)) ratio indicates that Ce-148 is a transitional nucleus while the N = 88/90 shape phase transition evolves into a gradual change of nuclear deformation for proton numbers Z < 60.
%~