Abstract

Exotic decay of various Nd isotopes emitting4He, 8Be, 12C, 20Ne, 24Mg, 28Si and 32S was studied taking the potential barrier as the sum of Coulomb and proximity potentials. The predicted half-lives are well within the present upper limit for measurements (T1/2< 1030 s). It is found that 16O and 20Ne emissions from 120Nd are the most favourable for measurements with T1/2 ≈ 1010 s. The predicted lowest half-life time for 20Ne emission from 120Nd, stresses the role of the doubly magic 100Sn daughter in the exotic decay process. The nuclear structure effect and shell effect are evident from the Geiger–Nuttall plots for different clusters. It is found that the presence of neutron excess in the parent nuclei slows down the exotic decay process.

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