TY  - JOUR
AU  - Jin, S. Y. et al
AU  - Algora, A.
PY  - 2021
DA  - 2021//
TI  - Spectroscopy of Cd-98 by two-nucleon removal from In-100
T2  - Phys. Rev. C
JO  - Physical Review C
SP  - 024302
EP  - 6pp
VL  - 104
IS  - 2
PB  - Amer Physical Soc
AB  - Low-lying states of Cd-98 have been populated by the two-nucleon removal reaction (In-100, Cd-98+gamma) and studied using in-beam gamma-ray spectroscopy at the Radioactive Isotope Beam Factory at RIKEN. Two new gamma transitions were identified and assigned as decays from a previously unknown state. This state is suggested to be based on a pi 1g(/9/2)(-1)2p(1/2)(-2) configuration with J(pi) = 5(-). The present observation extends the systematics of the excitation energies of the first 5(-) state in N = 50 isotones toward Sn-100. The determined energy of the 5(- )state in Cd-98 continues a smooth trend along the N = 50 isotones. The systematics are compared with shell-model calculations in different model spaces. Good agreement is achieved when considering a model space consisting of the pi(1f(5/2), 2p(3/2), 2p(1/2), 1g(9/2)) orbitals. The calculations with a smaller model space omitting the orbitals below the Z = 38 subshell could not reproduce the experimental energy difference between the ground and first 5(-) states in N = 50 isotones, because proton excitations across Z = 38 subshell yield a large amount of correlation energy that lowers the ground states.
SN  - 2469-9985
UR  - https://doi.org/10.1103/PhysRevC.104.024302
DO  - 10.1103/PhysRevC.104.024302
LA  - English
N1  - WOS:000680432700002
ID  - Jin+Algora2021
ER  -