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In; A Rosetta stone for decays of 
-process nucleiXu, Z. Y.*; Andreyev, A. N.; 他47名*
Physical Review Letters, 131(2), p.022501_1 - 022501_6, 2023/07
被引用回数：4 パーセンタイル：52.54(Physics, Multidisciplinary)The 
decays from both the ground state and a long-lived isomer of In were studied at the ISOLDE Decay Station (IDS). With a hybrid detection system sensitive to , 
, and neutron spectroscopy, the comparative partial half-lives (log 
) have been measured for all their dominant -decay channels for the first time, including a low-energy Gamow-Teller transition and several first-forbidden (FF) transitions. Uniquely for such a heavy neutron-rich nucleus, their decays selectively populate only a few isolated neutron unbound states in Sn. Precise energy and branching-ratio measurements of those resonances allow us to benchmark -decay theories at an unprecedented level in this region of the nuclear chart. The results show good agreement with the newly developed large-scale shell model (LSSM) calculations. The experimental findings establish an archetype for the decay of neutron-rich nuclei southeast of 
Sn and will serve as a guide for future theoretical development aiming to describe accurately the key decays in the rapid-neutron capture (-) process.
=82Jungclaus, A.*; Keatings, J. M.*; Simpson, G. S.*; Orlandi, R.; 他47名*
Physical Review C, 102(3), p.034324_1 - 034324_11, 2020/09
被引用回数：7 パーセンタイル：55.65(Physics, Nuclear)The decay of 
Sn was investigated at RIBF, RIKEN. For 
Sb the first information on excited states was obtained. In the case of 
Sb and 
Sb, new gamma-rays were observed. The new experimental results, in combination with state-of-the-art shell-model calculations, provide the first information on the evolution of the 0g
and 1d
proton single-particle states with increasing neutron number beyond =84.
Pd
and 
Pd
; Competing proton and neutron excitations in neutron-rich palladium nuclides towards the 
shell closure渡邉 寛*; Wang, H. K.*; Lorusso, G.*; 西村 俊二*; Xu, Z. Y.*; 炭竃 聡之*; Orlandi, R.; 他47名*
Physics Letters B, 792, p.263 - 268, 2019/05
被引用回数：6 パーセンタイル：47.17(Astronomy & Astrophysics)The isotopes Pd and Pd, respectively with 79 and 81 neutrons, are key isotopes to understand the evolution of the N=82 shell closure below 
Pd. These nuclei were studied at RIBF (RIKEN). New isomeric states with half-lives of 144(4) ns and 39(6) 
s were assigned spins and parities of (23/2
) and (19/2) in Pd and Pd, respectively. The assignment was carried out based on the results of the -ray intensity balance analysis and the measured transition strengths with the aid of a shell-model calculation. The isomoer in Pd was ascribed predominantly to three neutron-hole excitations in the N=50-82 shell. The 19/2 state in Pd is expected to involve the coupling of proton and neutron configurations. The new data will provide important benchmarks for a better understanding of -process nucleosynthesis.
