Phys.Rev. C 100, 024319 (2019), Erratum Phys.Rev. C 106, 029901 (2022)

B.Moon, C.-B.Moon, G.D.Dracoulis, R.A.Bark, A.P.Byrne, P.A.Davidson, G.J.Lane, T.Kibedi, A.N.Wilson, C.Yuan

Proton-neutron multiplet states and isomers in the odd-odd nucleus ¹²²I

NUCLEAR REACTIONS ¹²⁰Sn(⁷Li, 5n), E=58 MeV chopped beams from the 14UD tandem heavy-ion accelerator at the Australian National University; measured in-beam and out-of-beam Eγ, Iγ, γγ-coin, γγ(θ)(DCO), half-lives of isomers by γ(t) and γγ(t) methods using CAESAR array with six Compton-suppressed HPGe detectors and two low-energy photon (LEP) detectors. ¹²²I; deduced high-spin levels, isomers, J, π, multipolarities, bands, configurations; calculated quasiparticle energy diagrams as a function of quadrupole deformation parameter for neutrons and protons, Nilsson trajectories, total Routhian surface (TRS) energies, and total energy surfaces for 20- and 21- states by six quasiparticle alignments. Comparison with spherical shell model and deformed shell-model calculations. Comparison of angular frequency vs angular momentum plots for ¹²²I and ¹²⁴Cs for πh_11/2νg_7/2 configuration. Systematics of energies of 12+ and 14+ levels from πh_11/2νh_11/2 configuration in ^{116,118,120,122,124,126,128}I, alignment plots in ^118,120,122I, ground band states in ^116,118Sn and high-spin states in ¹²²I, excitation energies in the form of a liquid drop energy as a function of spin for ^120,122I, and ^152,154Ho.

doi: 10.1103/PhysRevC.100.024319