• Alpha-preformation in even-even alpha emitters: An alpha-decay without tunnelling approach

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      https://www.ias.ac.in/article/fulltext/pram/008/02/0144-0148

    • Keywords

       

      α-preformation probability; shell-closure effect; open-shell nuclei; zig-zag nature

    • Abstract

       

      An ‘alpha-decay without tunnelling’ approach shows that alpha-preformation probability in trans-lead even-even alpha-emitters lies in the range of 0·17–0·08, indicating a clear shell-closure effect atN = 126 and exhibits appreciably enhanced values in open-shell nuclei and executes a zig-zag nature with increasing neutron number in an isotopic series. All these findings are in fair qualitative agreement with experimental observations. Experimental results are found to overestimate this parameter for these heavy deformed nuclei.

    • Author Affiliations

       

      M K Basu1

      1. Department of Physics, University College of Science, Calcutta - 700009
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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