The exotic decay or cluster radioactivity is the radioactive decay at which the nuclei
emitting particle heavier than α-particle. This cold process is intermediate between α-
decay and spontaneous fission. Sandulescu et al. [1] was first predicted this phenomenon
on the basis of quantum mechanical fragmentation theory (QMFT). Spontaneous decay
of nuclei by emission of clusters heavier than α particle is experimentally established.
The emitted 14C, 24, 25, 26Ne, 28 30Mg, 32 ,34Si clusters from heavy nuclei were observed and
the half- lives measured [2] .
The cluster decay half-lives can be determined theoretically by the one dimensional
Wentzel-Kramers Brillouin (WKB) approximation [2] in which the nuclear potential has
a significant role. There are many models to calculate the nuclear potential such as the
double folding model (DFM) [3, 4] and liquid drop model [5]. In addition, the proximity
potential model has been used to study the cluster radioactivity [6–8]. The importance of
this model is that, it provides information about the radioactivity of different nuclei [9].
The Coulomb and Proximity Potential model (CPPM) [10] have been used to study alpha
and cluster radioactivity in various mass regions of the nuclear chart. |
