• Off-shell behaviour ofα-α interaction potentials

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      https://www.ias.ac.in/article/fulltext/pram/018/01/0025-0037

    • Keywords

       

      Off-shell behaviour; Kowalski-Noyes function; alpha-alpha interaction potentials

    • Abstract

       

      Off-shell behaviour of representativeα-α interaction potentials, both local and non-local separable, is compared through the partial wave Kowalski-Noyes half-off-shell functions. Parameters of the existing rank-one separable potentials are redetermined and an additional rank-two potential is constructed for this family. It is found that all these potentials show similar off-shell behaviour for higher partial waves. Their behaviour for low partial waves, however, particularly in the region far away from the energy-shell, is widely different. The off-shell correction for the (α, 2α) reaction at 140 MeV is calculated, as an application, and it is found that separable potentials predict a non-negligible effect.

    • Author Affiliations

       

      N R Sharma1 2

      1. Nuclear Physics Division, Bhabha Atomic Research Centre, Bombay - 400 085, India
      2. M.S.J. College, Bharatpur (Raj.), India
    • Dates

       
  • Pramana – Journal of Physics | News

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