TY  - JOUR
AU  - Watanabe, H. et al
AU  - Montaner-Piza, A.
PY  - 2019
DA  - 2019//
TI  - New isomers in (125)Pd(79)( )and Pd-127(81): Competing proton and neutron excitations in neutron-rich palladium nuclides towards the N=82 shell closure
T2  - Phys. Lett. B
JO  - Physics Letters B
SP  - 263
EP  - 268
VL  - 792
PB  - Elsevier Science Bv
AB  - The neutron-rich isotopes of palladium have attracted considerable interest in terms of the evolution of the N = 82 neutron shell closure and its influence on the r-process nucleosynthesis. In this Letter, we present the first spectroscopic information on the excited states in Pd-125(79) and Pd-127(81) studied using the EURICA gamma-ray spectrometer, following production via in-flight fission of a high-intensity U-238 beam at the RIBF facility. New isomeric states with half-lives of 144(4) ns and 39(6) μs have been assigned spins and parities of (23/2(+)) and (19/2(+)) in Pd-125 and Pd-127, respectively. The observed level properties are compared to a shell-model calculation, suggesting the competition between proton excitations and neutron excitations in the proton-hole and neutron-hole systems in the vicinity of the doubly magic nucleus Sn-132.
SN  - 0370-2693
UR  - https://doi.org/10.1016/j.physletb.2019.03.053
DO  - 10.1016/j.physletb.2019.03.053
LA  - English
N1  - WOS:000466802100040
ID  - Watanabe+Montaner-Piza2019
ER  -