• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/042/04/0349-0363

    • Keywords

       

      Nuclear reactions; 63,65Cu(α, xnyp); stacked foil activation technique; E≤50 MeV preequilibrium emission

    • Abstract

       

      Excitation functions of the reactions63Cu[(α, n), (α, 2n)+(α, pn)] and65Cu[(α, n), (α, 2n), (α, 3n), (α, 4n)+(α, p3n)] were investigated up to 50 MeV using stacked foil activation technique and Ge(Li) gamma ray spectroscopy method. Since natural copper used as the target has two odd-mass stable isotopes of abundance,63Cu(69.17%) and65Cu(30.83%), their activation in some cases, gives the same residual nucleus through different reaction channels but with very different threshold energies. In such cases, the individual reaction cross sections are separated with the ratio of theoretical cross sections. The experimental results were compared with the predictions of preequilibrium hybrid model of Blann. A general agreement was found in all reactions using initial exciton numbern0=4(4p0h) and also preequilibrium fraction depends on the incident particle energy.

    • Author Affiliations

       

      N L Singh1 B J Patel1 D R S Somayajulu1 S N Chintalapudi1 2

      1. Physics Department, Faculty of Science, M. S. University, Baroda - 390 002, India
      2. IUC-DAEF, Calcutta Centre, 3/LB-8, Bidhan Nagar, Calcutta - 700 091, India
    • Dates

       
  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.