Study of the decay of 291115* formed in 48Ca+243Am reaction

Abstract

The decay of 291115* formed in 243Am+48Ca reaction is studied using the dynamical cluster-decay model (DCM), including the possible effect of deformations. A comparative study of spherical and β2-static deformed choices of fragmentation is made for the 2n evaporation residue (ER) of the compound nucleus (CN) 291115*. The heavier neutron clusters 3n and 4n could be fitted only after the inclusion of deformation effect in DCM. Symmetric fission is observed for the spherical approach, which changes to asymmetric one with inclusion of deformation effect. Also, a comparative analysis between spherical and deformed (β2) cases of observed α-decay chains shows that the magnitude of penetration probability gets enhanced whereas preformation factor decreases due to decreased ΔR, when the a-daughter product is taken as spherical rather than deformed.