Yrast Bands Calculation for Odd-Odd Nuclei ¹⁶⁰Ho, ¹⁶²Tm and ¹⁶⁴Tm

In this paper, the axial symmetry rotor plus quasiparticle model is generalized from odd nuclei to odd-odd nuclei. Energy spectra of yrast bands for nuclei ¹⁶⁰Ho, ¹⁶²Tm and ¹⁶⁴Tm are calculated by using the method. Signature inversions in these three nuclei are reproduced, and one possible signature inversion mechanism connected with the calculation is also discussed.