Cluster model analysis of exotic decay in actinide nuclei

[摘要] ENGLISH ABSTRACT: The binary cluster model is used to investigate the properties of exoticstructures and decays in various nuclei. A simple method is described to choosethe possible clusters forming within the nucleus, by assuming the nucleus consistsof a mixture of up to four different core-cluster pairs. A phenomenologicalpotential is then used, with optimized parameters, to describe the even-even222-232Th nuclei within the binary cluster model, by calculating exotic decayhalf-lives, reduced electromagnetic transition probabilities, and energy spectra.After finding that all experimentally observed heavy ion emissions arepredicted with the model and calculated structure observables are reproducedwithin good agreement of the experimentally measured values, the model wasextended to include the even-even 230-234U, 236-240Pu and 222-224Ra nuclei.We found that almost all experimentally observed heavy ion emissions arepredicted within the model with reasonable accuracy in the calculated halflives,and found good agreement in the other calculated structure observables.

[发布机构] Stellenbosch University