Spontaneous fission and α decay from K -isomeric states within a cluster approach

Spontaneous fission and α decay from K-isomeric states are studied within the dinuclear system model. All these processes are considered as evolution of a nucleus in the charge (mass) asymmetry coordinate. For even-even and even-odd actinides and superheavy nuclei, the spontaneous fission and α-decay half-lives of K-isomeric states are calculated and compared with the available experimental data. The origin of the hindrance of spontaneous fission from the high-K isomeric states is explained.