%0 Journal Article
%T 1p(3/2) Proton-Hole State in Sn-132 and the Shell Structure Along N=82
%A Taprogge, J. et al
%A Gadea, A.
%A Montaner-Piza, A.
%J Physical Review Letters
%D 2014
%V 112
%N 13
%I Amer Physical Soc
%@ 0031-9007
%G English
%F Taprogge_etal2014
%O WOS:000334336600001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1759), last updated on Thu, 15 May 2014 17:28:52 +0000
%X A low-lying state in In-131(82), the one-proton hole nucleus with respect to double magic Sn-132, was observed by its gamma decay to the I-pi 1/2(-) beta-emitting isomer. We identify the new state at an excitation energy of E-x = 1353 keV, which was populated both in the beta decay of Cd-131(83) and after beta-delayed neutron emission from Cd-132(84), as the previously unknown pi p(3/2) single-hole state with respect to the Sn-132 core. Exploiting this crucial new experimental information, shell-model calculations were performed to study the structure of experimentally inaccessible N = 82 isotones below Sn-132. The results evidence a surprising absence of proton subshell closures along the chain of N = 82 isotones. The consequences of this finding for the evolution of the N = 82 shell gap along the r-process path are discussed.
%R 10.1103/PhysRevLett.112.132501
%U https://doi.org/10.1103/PhysRevLett.112.132501
%P 132501-6pp