Triaxial shape induced by couplings between equatorial orbitals
The observed signature splitting at high spin in the odd-odd isotopes Pr126-132 and its description in cranking calculations suggest that Pr-126 (Z=59,N=67) is triaxially deformed at intermediate values. The triaxial shape is explained as caused by specific couplings between the orbitals. These couplings are active for N=67 but not for N=69.