TY  - JOUR
AU  - Taprogge, J. et al
AU  - Gadea, A.
AU  - Montaner-Piza, A.
PY  - 2014
DA  - 2014//
TI  - 1p(3/2) Proton-Hole State in Sn-132 and the Shell Structure Along N=82
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 132501
EP  - 6pp
VL  - 112
IS  - 13
PB  - Amer Physical Soc
AB  - 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.
SN  - 0031-9007
UR  - https://doi.org/10.1103/PhysRevLett.112.132501
DO  - 10.1103/PhysRevLett.112.132501
LA  - English
N1  - WOS:000334336600001
ID  - Taprogge_etal2014
ER  -