Isomeric and two-quasiparticle states in the neutron-excess odd-odd nucleus 134Sb

Detailed theoretical calculations of the properties of the neutron-excess odd-odd nucleus ¹³⁴Sb are performed by using different theoretical approaches. A comprehensive comparison with the recent experimental data is performed; this comparison suggests the presence of isomeric states among the low-lying levels of this nucleus. These states are the twins of the corresponding levels of the odd-odd nucleus ²¹⁰Bi that is situated near the stability line. The obtained results manifest the similarity of nuclear structure in the region of the “remote” doubly magic nucleus ¹³²Sn and in the region of the classical stable doubly magic nucleus ²⁰⁸Pb. The text was submitted by the authors in English.