%0 Journal Article
%T Shape evolution in the neutron-rich osmium isotopes: Prompt gamma-ray spectroscopy of Os-196
%A AGATA Collaboration (John, P. R. et al
%A Gadea, A.
%J Physical Review C
%D 2014
%V 90
%N 2
%I Amer Physical Soc
%@ 0556-2813
%G English
%F AGATACollaborationJohn+Gadea2014
%O WOS:000341105200001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1909), last updated on Mon, 29 Sep 2014 17:16:17 +0000
%X The shape transition in the neutron-rich Os isotopes is studied by investigating the neutron-rich Os-196 nucleus through in-beam gamma-ray spectroscopy using a two-proton transfer reaction from a Pt-198 target to a Se-82 beam. The beam-like recoils were detected and identified with the large-acceptance magnetic spectrometer PRISMA, and the coincident gamma rays were measured with the advanced gamma tracking array (AGATA) demonstrator. The de-excitation of the low-lying levels of the yrast-band of Os-196 were identified for the first time. The results are compared with state-of-the-art beyond-mean-field calculations, performed for the even-even Os188-198 isotopes. The new results suggest a smooth transition in the Os isotopes from a more axial rotational behavior towards predominately vibrational nuclei through triaxial configurations. An almost perfect gamma-unstable/triaxial rotor yrast band is predicted for Os-196 which is in agreement with the experimentally measured excited states.
%R 10.1103/PhysRevC.90.021301
%U https://doi.org/10.1103/PhysRevC.90.021301
%P 021301-6pp