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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/058/04/0611-0621

    • Keywords

       

      Exotic decay; cluster radioactivity; fission model; cluster model

    • Abstract

       

      Half life for the emission of exotic clusters like 8Be, 12C, 16O, 20Ne, 24Mg and 28Si are computed taking Coulomb and proximity potentials as interacting barrier and many of these are found well within the present upper limit of measurement. These results lie very close to those values reported by Shanmugam et al using their cubic plus Yukawa plus exponential model (CYEM). It is found that 12C and 16O emissions from 116Ce and 16O from 118Ce are most favorable for measurement (T1/2<1010 s). Lowest half life time for 16O emission from 116Ce stress the role of doubly magic 100Sn daughter in exotic decay. Geiger-Nuttall plots were studied for different clusters and are found to be linear. Inclusion of proximity potential will not produce much deviation to linear nature of Geiger-Nuttall plots. It is observed that neutron excess in the parent nuclei slow down the exotic decay process. These findings support the earlier observations of Gupta and collaborators using their preformed cluster model (PCM).

    • Author Affiliations

       

      KP Santhosh1 2 Antony Joseph2

      1. Department of Physics, Payyanur College, Payyanur - 670 327, India
      2. Department of Physics, Calicut University, Calicut - 673 635, India
    • Dates

       
  • Pramana – Journal of Physics | News

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