• Total (complete) and ionization cross-sections of argon and krypton by positron impact from 15 to 2000 eV – Theoretical investigations

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    • Keywords


      Positron scattering; total cross-section; complex potential.

    • Abstract


      Considering interactions and scattering of positrons with argon (Ar) and krypton (Kr) atoms, we have calculated total cross-sections $(Q_{T} = Q_{el} + Q_{inel})$ using complex spherical potentials for these systems. In positron–atom scattering it is difficult to bifurcate the ionization and cumulative excitation contained in the total inelastic cross-section. An approximate method called CSP-ic (complex scattering potential-ionization contribution) similar to electron–atom scattering has been applied to bifurcate ionization and cumulative excitation cross-sections at energies from the threshold to 2000 eV. Adequate comparisons of the present results are made, with available data.

    • Author Affiliations


      Harshit N Kothari1 K N Joshipura2

      1. Universal College of Engineering & Technology, Near Moti Bhoyan, Kalol 382 721, India
      2. Department of Physics, Sardar Patel University, Vallabh Vidyanagar 388 120, India
    • Dates

  • Pramana – Journal of Physics | News

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