%0 Journal Article
%T Search for two-phonon octupole excitations in Gd-146
%A Orce, J. N. et al
%A Rubio, B.
%J European Physical Journal A
%D 2016
%V 52
%N 6
%I Springer
%@ 1434-6001
%G English
%F Orce+Rubio2016
%O WOS:000378999800002
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2750), last updated on Thu, 28 Jul 2016 14:04:22 +0000
%X The low-spin structure of the nearly spherical nucleus Gd-146 was studied using the Sm-144(He-4, 2n) fusion-evaporation reaction. High-statistics gamma-gamma coincidence measurements were performed at iThemba LABS with 7x10(9) gamma-gamma coincidence events recorded. Gated gamma-ray energy spectra show evidence for the 6(2)(+) -> 3(1)(-) -> 0(1)(+) cascade of E3 transitions in agreement with recent findings by Caballero and co-workers, but with a smaller branching ratio of I-gamma = 4.7(10) for the 6(2)(+) -> 3(1)(-) 1905.1 keV gamma ray. Although these findings may support octupole vibrations in spherical nuclei, sophisticated beyond mean-field calculations including angular-momentum projection are required to interpret in an appropriate way the available data due to the failure of the rotational model assumptions in this nucleus.
%R 10.1140/epja/i2016-16166-2
%U https://doi.org/10.1140/epja/i2016-16166-2
%P 166-7pp