Systematic study on the α-decay fine structure of even–odd nuclei in the range 84 ⩽<i>Z</i>⩽ 102

Abstract

A systematic study on the α-decay fine structure of even–odd nuclei in the range 84 ⩽ Z ⩽ 102 is done for the first time using our recently proposed Coulomb and proximity potential model for deformed nuclei (CPPMDN). The external drifting potential barrier is obtained by the sum of deformed Coulomb potential, deformed two-term proximity potential and centrifugal potential. The computed half-lives and branching ratios are compared with the experimental values. The standard deviation of logarithmic half-lives and branching ratio is 1.25 and 1.10, respectively. Our study reveals that the CPPMDN formalism is also successful in explaining the α-decay fine structure of even–odd nuclei.