2023/07/04 by Joshua T. Majekodunmi, Majekodunmi, Joshua T., M. Bhuyan +3
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Nuclear Materials and Properties #Nuclear Theory (nucl-th) #Nuclear physics research studies #Rare-earth and actinide compounds
paper · pdf · doi:10.48550/arxiv.2307.01706
openalex publication_date 2023/07/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The cluster dynamics of radioactive nuclei decaying to neighbouring daughter nuclei of the double magic 132Sn and 208Pb is investigated using the relativistic mean-field (RMF) approach with NL3^* parameter set within the preformed cluster-decay model (PCM). The novel feature of the present study is the application of the newly derived preformation formula, laying the groundwork for accessing the break-up of the Q-value: preformation energy, cluster emission energy and the recoil energy of the daughters formed. The energy associated with cluster preformation is theoretically quantified for the first time. This treatment underscores the shell effect, pairing correlation as well as the blocking of particular orbitals by unpaired nucleons. To ascertain the applicability of the new formula, the PCM based calculations are carried out with nuclear potential obtained using the phenomenological M3Y and microscopic RMF-based R3Y nucleon-nucleon (NN) potentials along with corresponding densities. We found a marginal variation that can be attributed to the difference in their barrier properties, however, the predictions for the case of both M3Y and R3Y potentials are found to agree well with the experimental half-lives. Although none of the considered reaction systems yields a double magic daughter nucleus, we found that the kinematics of their cluster emissions is governed by their proximity to the shell closure. The deduced systematic of the recoil energy in cluster decays can provide valuable insight for the synthesis of elements in superheavy mass region in the future.