The phenomenon of signature inversion in positive parity yrast states of [Formula: see text]I nuclei has been studied using the Particle Rotor Model (PRM) calculations. The experimentally observed signature inversion is well reproduced from the PRM calculations. The change in the value of a triaxial parameter [Formula: see text] was observed after the inversion. The PRM calculations were also used to describe the reduced transition probabilities. The derived change in the value of “[Formula: see text]” (in Lund convention) after inversion is interpreted as the change in nuclear shape from near triaxial to tending towards noncollective oblate.
Theoretical Study of Signature-splitting and Signature-inversion in Doubly-odd Nuclei in A∼80 Mass Region
