The α-decay properties of superheavy Rutherfordium nuclei (Z = 104) have been systematically investigated for isotopes ranging from 248Rf to 270Rf within the framework of the Coulomb and Proximity Potential Model. Nuclear masses were taken from several theoretical mass models, namely HFB-14, WS4+RBF, WS4, WS3+RBF, WS, KTUY, and FRDM, and were used to evaluate the corresponding α-decay energies (Qα). These Qα values served as essential inputs for calculating the α-decay half-lives, enabling a comprehensive analysis of decay systematics across the isotopic chain. To assess the reliability of the present approach, the logarithmic half-lives (log t1/2) obtained using the WS3+RBF mass model were compared with predictions from several well-established semi-empirical formulas, including UNIV, NRDX, UDL, Sahu, DK, Royer, SemFIS, and VSS. The agreement between different models was quantitatively evaluated using the standard deviation (σ). The results reveal a consistent correspondence between the present calculations and semi-empirical estimates, demonstrating that the model effectively reproduces the observed α-decay trends in superheavy nuclei. Overall, this study provides valuable insights into the decay characteristics of Z = 104 isotopes and offers a reliable framework for extending α-decay investigations to other superheavy elements, thereby contributing to a deeper understanding of nuclear structure, stability, and the mechanisms governing α-emission.
Sowmya et al. (Wed,) studied this question.