Particle-rotor model interpretation of rotational features in 125I

Abstract

Most of the structure of 125I at low and medium energies has been successfully interpreted using a particle-rotor model. Rotational features similar to complete particle-core rotational multiplets have been identified for the first time especially for g 7/2, d 5/2 proton-particle orbitals. The model calculations show also that the rotational structure of the J = 1 band build on unusually low-lying g 9/2 proton-hole state (9/2 + [404]) is naturally very well predicted and successfully described as well as other rotational features for negative parity states of h 11/2 parentage along with the different observed J = 2 bands. Experimental energies and transition properties of previously observed positive and negative parity states of 125I, have been compared to those predicted by the model calculations considering a moderately deformed rotor. © 2012 Published by NRC Research Press.