Various isomers in doubly odd I isotopes

Isomeric states (Isomers) in odd-odd ¹²⁰I, ¹²²I, and ¹²⁴I nuclei have been investigated using in- beam gamma-ray spectroscopy with the ¹¹⁸Sn(⁶Li,4n), ¹²⁰Sn(⁷Li,5n), and ¹²²Sn(⁷Li,5n) reactions at E_lab = 48, 58, and 54 MeV, respectively. Several isomers with half-lives ranging from a few nanoseconds to tens of microseconds have been identified for the first time and the absolute excited energies have been established by linking the low- and high-spin levels through the feeding and decay of the isomers in these nuclei. The properties of the isomers have been discussed in terms of spin traps and high-K isomerism based on two-quasiparticle configurations. The systematics for the absolute excitation energies of the J^π = 7^- and 8^- high-K isomers based on the πg9/2⊗^vh_11/2 configuration are presented for ¹¹⁶I to ¹²⁴I and compared with the 9/2⁺ states in the neighboring odd-A I isotopes.