Search of effective interaction in dipole bands of an odd–odd trans-lead Nucleus: the case of 204At

Abstract

Role of effective interaction potential in shears band structure in [Formula: see text]At has been investigated in more detail than in previous studies. A semi-classical geometric model is used to obtain the interaction strengths between valence protons and neutron holes constituting the shears blades. The value produces overall good agreement with this region’s nuclei. Band crossing is observed in the spin-parity range [Formula: see text] – [Formula: see text]. Configurations of the Magnetic Rotational (MR) band are assigned in the light of the Shears mechanism with the Principal Axis Cranking (SPAC) model. Experimental rotational frequencies and the deduced ratio of [Formula: see text] are well reproduced by SPAC calculations, suggesting the dipole band in [Formula: see text]At can undoubtedly be interpreted as the MR band resulting from the effective interaction of repulsive potential.