The I=2 bands in ^109In : possible antimagnetic rotation

The high-spin structure of ^109In was investigated with the ^100Mo(^14N, 5n)^109In fusion-evaporation reaction at CIAE, Beijing. Eleven new γ -rays of ^109In were identified, by which the bandheads of the I = 2 rotational bands were confirmed. The configurations were assigned with the help of the systematic discussion. Furthermore, the rotational bands are compared with the tilted-axis cranking calculations based on a relativistic mean-field approach. The rotational bands involving the 1 p 1 h excitation to the π d_5/2 and π g_7/2 orbitals are suggested as candidates for antimagnetic rotation based on the theoretical results.