%0 Journal Article
%T An alternative viewpoint on the nuclear structure towards 100Sn: Lifetime measurements in 105Sn
%A Pasqualato, G. et al
%A Gadea, A.
%A Jurado, M.
%J Physics Letters B
%D 2023
%V 845
%I Elsevier
%@ 0370-2693
%G English
%F Pasqualato_etal2023
%O WOS:001084426400001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5725), last updated on Tue, 31 Oct 2023 07:49:21 +0000
%X This work aims at presenting an alternative approach to the long standing problem of the B(E2) values in Sn isotopes in the vicinity of the N=Z double-magic nucleus Sn-100, until now predominantly measured with relativistic and intermediate-energy Coulomb excitation reactions. The direct measurement of the lifetime of low-lying excited states in odd-even Sn isotopes provides a new and precise guidance for the theoretical description of the nuclear structure in this region. Lifetime measurements have been performed in Sn-105 for the first time with the coincidence Recoil Distance Doppler Shift technique. The lifetime results for the 7/2(1)(+) first excited state and the 11/2(1)(+) state, 2(+)(Sn-104) circle times nu 1g(7/2) multiplet member, are discussed in comparison with state-of-the-art shell model and mean field calculations, highlighting the crucial contribution of proton excitation across the core of Sn-100. The reduced transition probability B(E2) of the 11/2(1)(+) core-coupled state points out an enhanced staggering with respect to the B(E2; 2(1)(+) -> 0(1)(+)) in the even-mass Sn-104 and Sn-106 isotopes.
%K Nuclear structure
%K gamma-ray spectroscopy
%K Transition probabilities
%K Neutron-deficient isotopes
%K Odd-mass nuclei
%K Lifetime measurements
%R 10.1016/j.physletb.2023.138148
%U https://doi.org/10.1016/j.physletb.2023.138148
%P 138148-7pp